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Full text of "E/MJ : engineering and mining journal"

Digitized by the Internet Archive 

in 2010 with funding from 

University of Toronto 



http://www.archive.org/details/emjengineeringmi101newy 



^- 



VOL. 102 / 



No. 1 




Engineering and 
Mining Journal 



July 1, 1916 
Two Sections — Section No. 2 

I 



ISSUED WEEKLY 



VOLUME CI 



January 1 to June 30, 1916 




HILL PUBLISHING CO. 

HILL BUILDING 
lOTH AVENUE AT 36TH STREET 

NEW YORK 



/ 



THEENGINEERING & MINING JOURNAL 

INDEX TO VOLUME CI 

January 1 to June 30, 1916 



Explanatory Note 

Illusti'iited articles are denoted by an asterisk 
(•). book notices by a dagger (f). 

Tliis index is made compreiiensive but concise. 
I'uins are taken to bring together matter belonging 
(o the same subject so that when a reader looks 
up an article he will be cited to related data. 
I'nder these conditions some further explanation 
of tlie method will be useful in finding leading 
articles quickly. Series of simple page numbers 
following names of mines or companies usually 
refer to news notes and other lesser matters. 
Descriptive articles are appended under titles 
(often abbreviated) beginning with dashes. When 
the minor references are numerous, as in the case 
ijf "Anaconda," they are sometimes separately 
designated as "notes." The unspecified entries 
may, however, be important; for instance, an edi- 
torial or other article may be entitled simply by 
a proper name. With a major entry or series of 
entries may be placed several minor ones relating 
to tlie same subject in order tliat its history may 
be followed. The asterisks denoting illustrated 
articles assist in Hnding tliem and if the author's 
name be known, it is the simplest means of refer- 
ence Productions are indexed under names of 
metals and countries or states, in important cases 
imdcr both. The mere juxtaposition of a mineral 
and geographical name usually signifies an output 
hut may cover other statistical or news matter. 
.Vot all' news notes are indexed, but a liberal se- 
lection of them is made. . , ^ , . .. 

Following is a list of the pages included in the 
several numbers of the volume, by date : 

.Ian 1 P^Ses 1-40 

'"■. s " 41-128 

It " 129-168 

.,.> " 169-206 

m " 207-246 

Feb 5:::::::.":.;; ■■ 247-288 

.. 1.7 " 289-338 

19 " 339-378 

26".!:: " 3T9-420 

March 4 " 421-462 

.V 11 " 463-504 

IS " 505-544 

•is " 545-586 

April 'l'.'.'.'.'.'.'.'.'.'.'. .'. " 587-630 

" .' o ' ' " 631-672 

15 " 673-716 

$2 " 717-758 

Jg " 759-802 

Mt,. "k " 803-844 

" 13.'.'.'.'.'.'.'.'.'.. " 845-884 



20. 



927- 



Tune 3 " 969-1014 

.) 10 " 1015-1056 

17 " 1057-1098 

2i'.'.'.\'.'.'.\\'. .'. " 1099-1140 

A 

rage 

A. W. C. Mg. Co., Mo 453 

Aberthaw Const. Co ^J; 

Abstracts of Current Decisions T91 1 

Accident Coram., Calif. Industrial— Report ; 

statistics; various work 176, 208, 220, 369, 

875. 1028, 1047, 1130._ 1131 
Accident compensation. See "Compensation." 

Accident, Hoisting, Fortune mine .664 

Accident statistics and prevention — Inspectors 

conference *"' 

Accidents— Alaska report • • • -1041 

Accidents and prevention. Anaconda 38J, '59^ 

Accidents, Body chart for Jc? 

Accidents, Idaho mine 467 

Accidents, Metal-mine in 1914 on 

^Classified by mining methods »bii, 659 

— Placer-mine fatality rate 641 

Accidents, Quarry, in 1914 • • ■ ■ li " 

Acetate of Ume, Gray, under Brit, restric- 
tions 11" 

Acetylene, Explositiility of lo 

— Copper lamps dangerous? 859 

Acme merger. See "Holiinger." 

Adanac, Ont 334, 799. 837, 1136 

Addicks, L. Cop. metallurgy ■ ■• 90 

Adit, Crosscut, cost, Portland Canal Tunnels 98 1 
Adit enlargement and alignment, Alaska- 

luneau 982 

Adventure mine, Mich lOiJO 

Aerial tramway. See "Tramway." 

Aero Club membership card '916 

Aeroplane mine. Calif 87i 

Aeroplane, Mine supplies by 99 J 

Aetna, Colo i,;- -.lo" "lU 

Africa. See "Transvaal," "Rand, "South 
Af.," "West Af.," "Rhodesia," "Madagas- 
car," "Nigeria," "Mozambique." 

After All Mines Co ■-•ISiJl 

Afterthought mine, Calif ' ^' 'Joo 

Agasslz, Rodolphe "L 1088 

Age and experience vs. youth and educa- 
tion .• 12 ,i 

Agitator, Devereux propeller slimes sii 



Page 

— Power for agitutors HIS 

Agitator, Laboratory cyanlding '440 

Aguascalientes Metal Co H" 

Abler, P. D 1046 

Ahmeek mine, Mich... 140. 200, 278, 834. 963. 1093 

Ahmeek village. Rights under 161 

Air blasts, Mich. cop. dist 922, 1091 

Air, Compressed, or electricity in stope haul- 
Air compressor. ciardner-Rlx vertical duplex •1026 
Air compressor, Lyons Atlas portalile gaso- 
line-driven *439 

Air-compressor starting. Butte Cent 8a9 

Air compressors. Comparative ettlciencies of 

various types of *255 

Air compressors, Ingersoll-Rogler at Cresson 

and Humboldt mines '566 

Air goes, Wliere the; compressor leaks 485 

Air hoist. Drill-column, for windlass •1025 

Air-hose clamp tool. Chicago ^941 

Air-hose wire-winding tool ;,„, 

Air lift for secondary unwatering l;ih 

Air lifts. Old Dominion ._. ^859 

Ajax mine, Mont "'"•-iX? 

Ajax oil or gas forge i^9 

Ajo Con.. Ariz • ■ ■ ■ "-^ 

Ajo ores. See "Calumet & Ariz." 

Alabama coke •,•,.■/•, „?n 

Alabama iron and ore lo". tubo 

Alameda-Success litigation Sr- 

Alaska antimony Ho. Sob. bi9 

Alaska coal — Imports 414 

—Mining near Seldovia • • ■ ■ ■ ■ ^»- 

— Fields opened to entry A! to Tic 

Alaska copper 48, 52. 115 

Alaska Cop. Mines •,••,■•;;;• f^i 

Alaska dredging— In 1915 101. 115. 550 

— Berry's locomobile dredge 'i^'^ 

— Kusliokwim dredge. Candle Creek 805 

Ala.ska-Ebner ."•; 

Alaska— Ellamar Dist. report ;A^'-T,SS 

Alaska Endicott la». 11*J 

Alaska Exploration Co •. • • • -1"^ 

Alaska-Gastlneau ; Perseverance mine (see 
also "Alaska Gold Mines Co ') ljl|' gi^'j^g., 

— Report; Perseverance mine section. .. ...^.'JM 

Alaska gold and silver 43, llJ, 1^4 

Alaska Gold Belt 'qbi "insi 

—Drilling record ■ • -961. 1081 

Alaska Gold Mines Co. (see also , Alaska- 

Gastineau") '5. 134, l^t". -,J 

—Report 'iVk" 71 n 

Alaska Gold Mg. Co "•>■ 'l? 

Alaska Graphite Co »J- 

Alaska inspector's report >■)>*;: 

Alaska. Interior Dept-t)u»ft"i, »•>•,■.;;• -.VV 34. 
Alaska Juneau... .30, 75, 115, 134, 135. 414. 921 

—Report • ■ ■ ,911 

— Adit enlargement and alignment »»- 

Alaska — Juneau mining in 1915 • '■<>* 

Alaska Mex. See "Alaska— Treadwell group. 

Alaska mining in 1915 ll» 

Alaska Peabody ^l* 

Alaska railroad strike; ^J- 

Alaska. Transportation in •*' ' 

Alaska — Treadwell group ; ^ 

— Tamping practice ^°o 

— Machine drilling J" 

— Proposed consolidation »« 

—Safety magazine— "Gold Bar ' VJZ 

— Douglas Isl. wage rates ij J J 

—Alaska United rd'ort- •■,•,•.•■•••.••■_■■• 'oVi' inio 

—Various notes 115, 134. 8i7. 921, 1049 

Alaska Treasure Con 4- Wo 

Alaska Treasure Syndicate «- 1 

Alaska tungsten ■ ^,- • ' V • ■,•, 

Alaska-United. See "Alaska — Treadwell 
group." 

Albemarle Zinc & Lead "6 

Alberta- Calgary petroleum. ....■■ JW 

Alberta natural gas— Prohibiting exportation 920 

Alberta production ;;;••;-•„•• •,•„■„•-' ' , for 

Allilon. rtnh 281, 456, 100,, lUb 

Albro mine, Colo '5- 

Aiexo mine, Ont •■■• •'; 

Algomah Mg. Co. report, etc 822,999 

Algonia Steel Corp., Ltd 'f, 

Alice Arm, B. C <^ ' 

Alice mine, Ida • ■ • ■ • -J;!; 

Alkali merger. Mond-Castner 1024. 9bi 

Allen, R. C. Vanadium in Mich............. ;8t. 

Allouez, Mich 140, 200, 622 

—Report 2« 

Allovs used in Zeppelins 9« 

Alniy, Darwin, Death of «^'^ 

Alpine mine, Calif 

Alta Cop. and Silver, Mont 

Alta-Germanla, Utah °|^" 

Alta Tunnel & Trans 923. IOj. 

Alumina in silicates. Dctemilning lOjS 

Aluminum-barium glass '-•>* 

Aluminum Co. of America ; Southern Alu- 
minium Co SI. S2. lOi;, loss 



499 



Page 
-\luiiunuiii in aluminum dusi. Estimating me- 
tallic 813 

Aluminum in 1915 41, 81 

— Prices and market •IS. 81 

— Imports and exports .' 756 

Aluminum ore. 1911-1914 128 

Aluminum smelting. Norway 751 

Alvarado M. & M. Co "..116, 754, 1004, 1123 

Amador Con. See "Consol. Amador." 

Amador Star, Calif 1005. 1049 

Amalgamated Pioche 77, m 

Amalgamated Zinc (De Bavay's) Co 128 

•Amalgamating copper plates 647 

Amazon-Dixie. Ida 455 

Ambraw Milling Co 449 

American Chemical Soc 535. 617 

— Bureau of Mines advisory comm 1088 

American Coal Refining Co 1093 

American Con. Cop 33 

American Electrochem. Soc. 276, 425, 451. 563 

652, 819, 820. 832. 874. 943. 958, 1075 

American Fork. Utah, activity 1052 

American Gold Dredging Co 962 1092 

American Inst. .Mg. Engineers: 

— Proposed increase of dues 154 

— Program for Feb. meeting 176 330 

— February meeting 435 

— Photos, of officers .*!!!!! •527 

— Present status and aims '.'.'.'.'.'.'.'.','.'. 435 

— Resolution on Mex. outrage '.'.'.'.'.'. 236 

— Flotation dissertation at smoker *.'..' 382 

— Honorary members ; deceased list ! ! 1060 

— Army and Navy matters 270. 271. 360 435 

— Simplified spelling. McGinty on 445 

— Various papers, etc. 89. 90. •216. 226. ^469 
•480. 508, 562, 643, •726. ^859. •860. 888! 

•902, 1033, 1057, 'loei 

— Chicago section 276 

—Colo, section '.'.'. 276', 330 

— Mont, section 330, 367, 494 

• — Nev. section 409 

—X. T. section .ioS,' 535, 831 

— Southern Calif, section oyg 

—Utah section — Preparedness 240 795 

American Iron & Steel Inst... 276. 513. 958. 1089 

—I. & S. V\'ks. Directory tl087 

American Manganese Mfg. Co. ; Cuvuna-Du- 
luth; Cuyuna Mille Lacs 163. 711. 796, 801, 

878, 1050 

American Manganese Steel Co 1089 

American Mines, Colo 76 

iimerican Mg. Congress — Prospecting on for- 
est reserve 612 

— I'tah chapter 709 

— Xew Mex. chapter 1089 

American Molybdenum 75. 621 

American Ore Flotation Co .' 76 

American Pig Iron Asso 451 

American Placer Mg. Co 101 

American Rand Syndicate — Will Am. capital 

be attracted to Far Eastern Rand? 1124 

American Rutile Co 176 

American Smelters Securities Co. ; Garfield 

Smg. Co 52. 58, 92, 114. 138 

— Elec. smoke precipitation •388 

American Smelting & Ref. Co. : 

— Report 573. 577 

— Tin smelting, Perth Amboy •927 

Briefer mention 25, 67. 487,492 

— El Paso smelting practice 89 

— Arkansas Val. Smeltery 160. 496.537 

— Electrolytic copper refining 9 

— Refinery and smelting capacity 51, 52. 58 

—Pig-lead sales policy 569. 583.625 

— "Dollar exdiangc," South Am 531 

— Lead production 660 

. — Plants' copper-roflnlug capacity 912 

— Ttiree vessels ac(iuired 956 

— Electrolytic' zinc plant 104S 

— East Helena smeltery improvements 1114 

—Mines in Mex 58, 116. 117. 754, 1123 

-Various notes 26. 107. 108. 114, 138, 160. 
199, 279, 416, 537. 538. 581. 710. 835, 871. 

920. 962. 1007. 1052. 1132. 1133 
American Soc. Mech. Engineers. 158. 535. 646, 874 

American Star Antimony Co. ...^. 1005 

American Telephone & Telegrapl^.Co. report. 827 
American Trona Co. (see also *'Potash, 

Searles Lake") 75. 82, 277 

American Vanadium Co 848 

American Zinc & Chem. Co 62. 542, 609. 626 

American Zinc. Lead & Smg. Co. 62. 608. 609, 

610, 751. 869. 9-20. 1134 

—New pumps rapidly built 1031 

— Purchase of Granby Co 1042 

American Zinc. Tenn 77, 114,164 

"Americanizing British mines" 870 

— American engineer abroad 95."i 

Anilck clay property. Calif 332 

Ammonia leaching. Kennecott 788. 95j 

Ammonia Soda Co 10.4 

Ammonium sulphate, Gt. Brit 33. .419 

Ammonium sulphate. U. S.. imports, exports,. 543 



THE EXGINEERING & MINING JOURNAL 



Volume 1 01 



Anaconda Cop. Mfg. Co. (see also 'Interna- 
tional Smg."J : 

—Report 826, 828. 829 

— Betterments — Pres. Ryan's statement — Flo- 
tation ; new roaster ; Gt. Falls milling aban- 
donment ; smelteries ; electrolytic zinc ; 

Chilean mines : statistics, etc 361 

— Diridend 614 

— Coal-dust firing 'SOS 

— Klectrol\'tic copper refining 9, 51 

— Fire, Bost. & Mont.'s Penn. mine 362, 452, 

496. 536. 380, 619, 754, 1051 

— Lifting 210-ton converter *396 

— Lilly hoisting controller *68S 

— Safety trollev-wire bos *857 

—Zinc plant, Gt. Falls 22, 25, 94, 361 

— Zinc process, Elec, described 425 

— Refinery and smeltery capacity 51, 52, 90, 1132 

— Men employed in mines 141 

— Flotation — Tests and plant described ♦469, •480 

Oils 508 

Testing blankets for Callow cells 562 

— Safety bureau 382 

— Accidents and their prevention *593 

— Regrinding — Mill lining, etc *480 

— Plan and flow sheet. Washoe ._. *552 

— Profit-sharing 447. 612 

— Device for chairing cages *818 

— Photo. — Remelting furnace *400 

— Tramway and mine hoisting record 493 

— Donfs for the skinner 943 

— Raritan works 31, 92, 104. 361, 362, 537, 

•724, 730 

— South Butte 110 

— Douglas mine bonding 32, 163 

—Raven Cop. Co 333 

— Butte Alei-Scott 51, 110, 199, 372. 435 

— Pilot-Butte 32. 50. 1B3. 280, 455, 536, 711. 

754. 798 

—Andes companies 118, 164, 236. 361 

— Atlantic Mines Co. deal 922 

— Porphyry Dike mine 963 

— Mav enter Bolivia 487 

— Review of year 30. 51. 74. 77, 91, 92, 94. 

109, 110 

—Tropic mine 1007, 1090, 1131 

— Consolidation rumors 1131 

—Various notes, etc. 160. 163, 239, 333, 372, 
388. 389. 415, 435. 499. 540, 581, 382, 619. 
622. 623. 641, 667, 711. 798. 833, 836. 871, 
875, 963, 992. 1006, 1051, 1090, 1093; 1131, 1135 

Analysis, Metallurgical. Brief Course in t366 

Analysis, Rapid. Methods of, St. Jos. I-ead 

Co. 650. (erratum ) 781 

Anchor-boll casings *561 

Anchor mine. Xev 32. 1007 

Ancker, Albert 330 

Anderson, A. .1 1001 

Anderson, L. D. Mechanical feeding of sil- 
ver-lead blast furnaces •SSd 

Anderson on Calif, oil strata 104 

Anderson, W. B., Death of 748 

Andes copper companies 236 

-Notes 118, 164. 361 

Andrada Mines, Mozambique *673 

Andrews & Hitchcock Iron Co 754, 757 

Anglo-Chilean Nitrate Co 259 

Anglo-Colombian Dev. Co 102, 119. 668. 1094 

Anglo-French Exploration Co 1108 

Annuaire pour !'An 1916 t703 

Antelope mine. Rhodesia 137 

Antimonial ores, Cvanide for 224 

Antimony, Alaska 115. 556, 619, 1003 

Antimony, Ariz. — Battle Flat 30 

Antimony, Ark. — Am. Star 1003 

Antimony, Bolivia, ore exports •173, 1054 

Antimony, Calif., discoveries 332, 962 

Antimony, Canada 483 

Antimony, China. Hunan Province •637 

— Notes, etc 79, 742 

Antimony Corp 374 

Antimony, Electrol>-tic — Wu-Gen Co 283 

Antimony importing — Guarantees 155 

Antimony in 1913 79 

— Prices and market *io, 79 

^Large output of ore 556 

— Imports and exports 736 

Antimony. Nova Scotia, ore 641 

Antmony ore in 1911-1914 128 

Antimony products. Nomenclature 327 

Antimony-Silver Co.. Ida 163 

Antimony and Silver Mines Co., Nev 1093 

Antimony Smg. & Ref. Co 557. 924 

ApoUo Elec. Steel Co 368 

Apperson. A. B 276 

&pprai.sement. See "Tarifl," "Tax." 

Aramaj-o, Francke mines 82, 119, 174 

Archdeacon, G. K. Engineer in the tropics.. 938 

Argentina tungsten 203 

Argo mill, Colo 242 

Argo Mines Co., Ariz 1049, 1133 

Argonaut mine, Calif 498, 666, 710, 795 

Arlzona-Butte Mines Co 1133 

Ariz. — Cerbat and Black Mtns. mineral de- 
posits II 

Ariz. Commercial 621. 797 

Ariz, copper 48, 53 

—Mining and metallurgy 53. 90 

Ariz. Cop. Co 52. 75. 369, 621, 642 

— Report 862 

Ariz, gold and silver 43 

Ariz, labor — Cllfton-Morenci strike, etc. — 

Wage scales before It 24 

— Assessment-work Interference 194 

— Strike settled 197 

— New strike 362,413 



—Notes 30, 53, 74, 105, 161, 278. 369, 497, 

661, 833, 1004 

— Oatman dist. wages, etc 6, •SSS 

— Warren dist. wage increase 581 

Ariz, laws 103, 665. •898 

Ariz. Zinc and Lead Co 1092 

Ariz, mining in 1915 103 

Ariz. — Oatman and Kingman; map •o 

Ariz, smelting situation 1132 

Ariz, spelter 608 

Ariz. Tellurium 30 

Ariz. — Tom Reed-Gold Road dist. (see also 

"Oatman," etc.) •! 

— Map of claims •4 

Ariz., Tungsten in 68" 

Ariz. Venture 332, 621 

Ariz. Volunteers 1004 

Ariz. Zinc. & Lead Co 797 

Arkansas oil, gas, manganese 1092 

Arkansas A'alley. See "American Sm. & 
Ref." 

Arkansas zinc 608 

— Rush district, etc 485, 709, 751. 796 

Armilda mine, Mont 963 

Arminius, Va 334 

Armor-plate nonsense. The 615, 746 

Armstrong, F. H. Electro-hydraulic shovel.. *860 

Arnold, R. Petroleum resources 468 

Aroroy dist. photos »188, ^948, •989, *1117 

Arsenic, Canada 475, 483 

Arsenic imports and exports 503 

Arsenic, Utah 115 

Arsine poisoning. Odd case 769 

Arthur, James, Death of 663 

Asbestos. Canada 483 

Asbestos claims, Ariz 279, 835 

Asbestos Corp. of Can 416 

Asbestos packing made in U. S. — "Goodyear- 

ite" 1034 

Asbestos, Quebec 806 

Asbestos, Shasta Co., Calif 962 

Ash Creek Asbestos, Ariz 666 

Ash Creek Gold, Ariz 621 

Ash Creek Mg., Calif 73 

Asphalt in ancient times 956 

Asphalt . Trinidad 55 

Asphalt. Venezuela 120, 583 

Assay curves for copper drill holes. Interpre- 
tation of ^726 

Assay fluxes. Lime in 568 

Assay maps, etc. — Samples and their inter- 
pretation ^933 

Assaying, Crushing fineness for 187, 445, 568 

Assaying method. Comer 793 

Assays, Pulp and metallics 612 

Assays, Silver — Effect of borax in matte fu- 
sion ^648 

Assessment work — Law reform 787, 790, 823 

Associated Geological Engineers 494 

Associated Oil Co 239 

Associated Smelters. See "Broken Hill." 

At last 331 

Athens mine, Mich 1134 

Athletic Mg., Mo 77, 622,751 

Atlanta mines, Nev 164 

Atlas group, Ariz 162, 279 

Atolia, Calif., notes.. 107, 162, 199, 581, 750, 1050 
Atolia Mg. Co. 31, 107, 277, 332, 411. 580. 1134 

Auger drills. Forming tools for ^857 

Aurora Con.. Nev 77 

Aurora-Sampson, Ida. (see also "Western 

Union") 31, 242 

Aurora Zinc Mines Co 663 

Austin Cop., N. M 1094 

Austin mine, N. M 540,879 

Australasia. See also "Australia," "Broken 
Hill." 

Australasia copper 48, 127 

Australasia gold. .43, 127, 137, 348, 714, 827, 1000 

— Export prohibition removed 756 

Australasia in 1915 126 

Australasia — N. Z. exports 137, 714 

Australasia silver 127, 714 

Australia— Electrol.vtic Sm. & Ref. Co 530 

Australia — Lead-acetate substitute 440 

Australia, Mining and metallurgy in 340 

Aastralia — Queensland production 827 

Australia, Resoiling in •529, ^1117 

Australia silver coinage 584 

Australia — Tasmania production 1000 

Australia tin 67, 128 

— Cock's Pioneer operation. Vict ^347 

Australia, West — Sons of Gwalia milling prac- 
tice 224, 225. 263, 356 

Australia zinc 127. 128.608 

— <:erman ore-contract decision, etc. 148. 

1095. 1104 
—Broken HiU Asso. Smellers 1120. 127, 

144, 799 

— Zinc Producers' Asso. Prop 1104, 1120, 1121 

Australia's base metals. Melting and selling. .1120 

Austr-ilian coal embargo 1043 

Australian Electric Steel. Ltd 1121 

Australian Metal Exchange 215 

Austria coal and coke 1139 

Austria steel and Iron 757, 997 

Auto. Engineers, Society of 595 

Auto, truck. See also "Tractor." 

Auto trucks for the border ^995 

Averv, P. W. Galena In gold and silver ores 819 

Aviation, Alloys used In 938 

Avres, T. L., Death of 330 

Azalla, Nev 32 

Azimuth, Target for determining 'eoi 

B 

Babllonia Mines, Ltd 120 

Bachnrach pocket CO. Indicator •647 



Page 

Bacigulpi, Chas., Death of 1046 

Baekeland, L. H 1088 

Baerwald, Emil 137 

Bags, Bryant's method of shaking, by com- 
pressed air 183 

Bags, Precipitate, Holder for ^526 

Bailey, H., slimes treatment 992 

Bailey pipe-fiow meter •1034 

Baker, A. A. 617 

Baker, H. F 137 

Baker Lead Co 60, 1091 

Baker Mg., Utah 33 

Balaklala Con 52, 107, 388, 411 

Baldwin, A. J., new pres , ^327 

Ballanberg, Adolph 367 

Balls. Steel, for Mex. mills 573 

Baltic, Mich. Sec "Copper Range." 

Bancroft. Howland 198 

Banka tin 67, 965 

Bankers tract. Mo 453 

Bannack Gold, Mont 163, 1133 

Banner & Bangle, Mont 331. 499, 798 

Bannister mine, Calif 201 

Bantjes Con 122, 124 

Barber asphalt operations 55, 120 

Barber, T. W. Civil Engineering T.vpes and 

Devices t366 

Bart>our, P. E. Review of 1913 103 

— Proper way to spit fuses •260 

— Porphyry coppers in 1913 742 

— r. S. mineral-land law 823 

Barite, Meggen, Westphalia 103 

Barium-aluminum glass 254 

Barium chloride from barium sulphide and 

chlorine 356 

Barker, Pierce 157 

Barnes-King Devel. Co 329 

— Report 821 

—Notes 199, 202, 242, 280, 372, 415, 582. 661. 

753. 919. 922, 1133 

Barr, .1. C. Chain grizzlj-, Rowe mine "599 

Barrett, Edward 918 

Barrett, John ^289 

— Monroe doctrine Pan-American 301 

Barron shaft, Pachuca, Concreting »676, 700 

BartlesviUe Zinc Co 609. 584 

— Gallium-indium alloy 197, 720. 937 

Barton, C. R. Cartridge-brass mfr •973 

Barton, E. M., Death of 874 

Barvtes, Calif 830 

Bateman, G. C 918 

— Markets for East. Can. ores 597 

Bates, Lindell Theodore 237 

Bath house for miners 477 

Batopilas Mg. Co 1123 

— Report 8 

— MetaUurgy *297 

Battle Flat, Ariz., antimony 30 

Bauer. L. A. Compass changes 901 

Bawdwin output increasing. Burma 20 

Bay State Ry. plant cost 227. (correction).. 394 

Bavard. R. S. Liquid manometers ^942 

Bayliss, R. T 874. 918 

Beach Glen Iron Mg. Co 419 

Beadle. C. Toughening paper filters 781 

Bear Canon, N. M 32 

Beaver Con., Ont 923 

—Reports 481, 905,1136 

— Statistical notes 33, 871 

Beaver Creek Mg. Co 1135 

Beck, .T. P 533 

Beck Tunnel, Utah (see also "Colorado 

Con.") 668, 964 

Beckett, P. G. Water problem. Old Domin- 
ion 643, 'SSS, ^902 

Beeson mine, Nev 964 

Behm mine, Mont 87S 

Belen mine. Mex 33, 281. 1007 

Belgian relief 872 

Belgian Scholarship Committee 658 

Belgium coal 543 

Belgium iron 997 

Bell. Automatic locomotive •1031 

Bell, R. N. Idaho In 1913 177 

— Peat-pho.sphate fertilizer 52s 

Bell Reef Devel.. Rhodesia 137 

Belleville Tailings Asso 77 

Bellevue Hudson. Colo 31.797 

Bcllite No. 1 explosive 690 

Belt dressing. Misuse of 85s 

Bench claims, etc.. In Yukon •722. •806. 10,38 

Bendfeldt, J. D. A. F., Death of 409 

Bcnguet cvanldc-plant photo ^442 

Bennett, J. C. Safety gate •393 

Benny Holllnger. Ont, 1032 

Benson. Henry K 45li 

Bent. Qulncy 533 

Benzol, Manufacture of •; 

Benzol plants. New 8. 78 

Benzol Products Co 8, 78 

Bergoat. A. Meggen deposit 103 

Berrv, C. J., dredge ^172 

Berry, Edward W 1046 

Brrrv, J. C, and Bolivia tin smelting 23. 33, 

164. 174 

Bertellng. .Tohn P 794 

Bethlehem Chile Iron Mines Co 33, 118, 869 

BelliUhem Steel Co. — Consolidation 4"7, 408 

— Mining Interests, Cuba •.■iS7, ^605 

— Annor-plate situation 615 

—Notes 71, 375, .-.ii2, 1085 

Big Bend mine, Tex i;8, 334 

Big Cllir, Calif 75 

Big Creek, Ida 1006 

Big Drumni claims. Calif 1040 

Big Five Tunnel, Colo 31, 1093 



•S 



January 1 to June 30, 1916 



THE ENGINEERING & MINING JOURNAL 



Big Four Explor., Utah 
Big Jim 



Page 
114, 138, 281, 
624, 608, 712, 999 
Ariz. 162, 201, 241, 454. 666, 
797, 834, •896, 897, 899, 1049, 1133 

Big Ledge Devel., Ariz 30 

Big Pine Con.. Ariz 75, 100,371 

Big Pine dist.. Calif 797 

Big Rice Lake dist 'SSO 

Big Run Zine, Mo 999 

Blgnell, L. G. E 1001 

Billings, R. S 409 

Blraotallic Mg., Wash 164 

Bingham & Garfield electrification 1132 

Bingham Mines. Utah (see also "Eagle & 

Blue Bell") 243,624 

— Report 946 

Bingham wage increase 240 

Bins, Ore, Clapper's door-operating mechanism 



for 



Bins, Polygonal, Perth Amboy •928 

Birch, S. Kennecott mines 52 

Bishop mine. Out 837 

Bismarck mine, Colo 1131 

Bismuth, Bolivia 82, 174 

Bismuth, Fire refining of 356, 778 

Bismuth in 1915 82 

Bismuth, Peru •846, 848 

Bits for drill steel, Carr '13 

Black Iridav mine, Mont 836 

Black, H. F 794 

Black Hills gold-bearing iron-quartz-tremo- 

llte belt •770 

Black Hills Tungsten Co 113, 799 

Black Jllns. deposits, Ariz 11 

Black Prince Cop. Co 921. 1133 

Black Range mine. Ariz 898. 962, 1133 

Blacksmith shop. Cop. Queen 'lOgO 

Blacksmith shop. Underground *818 

Blackwelder. Eliot 831 

Blake. L. I., Death of 918 

Blake, Ross 28 

Blankets for Callow flotation cells. Testing. . 562 
Blast furnace. See "Furnace," "Smeltery." 

Blast, 75,000-ton. W. Va. quarry — Cost 227 

Blasting. See also "Explosive," "Drill." 
"Shooting." "Du Pont." 

Blasting boulder in dredge bucket •673 

Blasting caps. Advantages of strong 12 

Blasting caps. Two or more electric, per 

here hole 154 

Blasting gases, Neutralizer of 601 

Blasting, Morris-Lloyd mine ♦354 

Blasting — Primers and misfires 12 

Blasting — Shaft sinking, Ont ^774 

Blasting — Spitting fuses ^260 

Blasting — Splitting logs with dynamite 184 

Blasting — Storing and handling explosives. . 349 

Blasting — Stronger detonators 187 

Blasting — Tamping advantages 12 

Blasting. Treadwell group — Tamping 560 

— Machine drilling 643 

Blasting with liquid air 998 

Blecher mine. Ariz 332 

Blende. Roasting of 1021 

Blende roasting. Wedge furnace for 718 

BlickenstalT & Braun 75 

r.liek, P. F. Bolivian mining *\'% 

Bloede scholarship 826 

Blorafield, A. L 617 

Blowers and compressors, various types, ef- 
ficiencies compared ^255 

Blue Bell. Ariz 332. 835, 1092 

Blue Eyed Nellie. Mont 1006 

Blue Goose mine. Okla 876 

Blue-sky law, etc.. Calif 29. 452. 536 

Blue-sky violations. Mont 412. 795 

Blueprint tube, Improved •1112 

Bluster Con.. Nev 964 

Boardman, F. L 794 

Bobcat Merger, Calif 621 

Body chart for non-fatal accidents •lOSO 

Boiler-cleaning costs 1115 

Boiler-furnace door supports •261, •560 

Boilers — Coal and oil fuel cost chart •555 

Boise, Charles W 535 

Boise-Rochester Mg., Ida 76 

Boleo, Mei 52, 116 

Bolivia, Anaconda may enter 487 

Bolivia antimony 175. 1054 

Bolivia bismuth 82. 174 

Bolivia copper 48. 119, 174. 296 

Bolivia export tax 174,363 

Bolivia gold— 14-lh. nugget 1007 

Bolivia mining in 1915 119, •173 

— Map 



Bolivia silver 

Bolivia — Things in technical literature that 

are not so 

Bolivia tin 67, 119. •173, 282, 

—Plans for smelteries, etc. 25. 33. 119. 164, 

174, 

—Smelting at Perth Amboy.. 25. 67, 48", 492, 

Bolivia tungsten 175, 

Bolley, William R 

Bolt casings, Machinery foundation 

Bonanza King Con 

Bond, Capt. William 

Bond, Maj. P. S.. on pontons 

Bonneville Nat. Gas & Oil 

Bonney Mg. Co 112 

Bonsib. R. S. Dumping waste cars • 

Boob Creek, Alaska, strike 

Books — Flotation bibliography 

Books, Important, of 1915 

—Notices in 191i; 366, 534, 705, 917, 

Books on military subjects 



174 



Books, etc. — Bibliography of elec. precipita- 
tion ^392 

Borax, Calif 850 

Borax Con.. Ltd.. report 549 

Borax in matte fusion. Effect of ^648 

Borax, Peru ^846, 847 

Borcherdt, W. O. Miner's exam 230 

Boss mine, Nev 32, 103, 111, 163, 963 

Boston & Corhin, »Iont 499,836, 1047 

Boston-Idalro Dredging Co 101 

Boston & Mont. See "Anaconda." 

Boston & Sup., Ariz 241 

Bottinelli's failing-rope indicator •ISO 

Bouerv, Pierre 409 

Boulder Tungsten Prod. Co. 31, 76, 106, 279, 

499, 708, 878 

Boundary Cone, Ariz 30 

Boundary Red Mtn., Nev 77 

Bour molybdenite mine, Calif ^867 

Bowie Mines Dev., Ariz 621. 1133 

Bracken mine, Colo 333, 499 

Braden Cop. Co. : 

— Kennecott report 788 

— Metallurgical operations •315 

— Oxvacetylene welding 230 

—Notes 53, 118, 365, 441, 603, 647, 712 

Bradley, F. W 918 

Bradley properties. Mo., sale 453 

Bradley, W. W.— -Quicksilver-ore concentra- 
tion 1033 

Brafl'ett. Mark P 330 

Brainerd-Cuyuna drop shaft ^404 

Brakeman, Roy E 579 

Brakpan. Transvaal .809, 1124, 1125 

Braley, B. The reason 152 

Brandenburg, J. F. Publication and pat- 
ents 554 

Brass manufacture. Cartridge •975 

Bravton, Corey C 1130 

Brazil mining in 1915 120 

Brazil. Mining industry of *759 

— Calvx core drill exploring •1037 

Breadner, Robert W 1046 

Brewer's. I. C, constant-flow device... •1029 

Brewer, W. M 1088 

Bridges, Military ponton 1070 

Bridges, R. W. Metallurgy of ores from 

Cobalt 646 

Britannia M. & S 268, 270, 453 

British. See also "United Kingdom," "Gui- 
ana." "India." 

British Am. Nickel Corp 122 

British Broken Hill Prop, report, etc. 1104, 1121 
British Col. Cop. Co. (see also "Canada Cop. 

Corp.") 52, 269 

British Col. copper 236, 269,484 

British Col. gold, silver 483 

British Col. in 1915 236, 208. 484 

British Col. road-aid bill 104S 

Broadwater Mills, Utah 77, 114. 138. 624, 668 

Broan, J. M. Sinking Woodbury shaft 521 

Brock, Maj. R. W 1046 

Brodie, W. 51. Metallurgy of native-silver 

ores, S. W. Chihuahua ^297 

Broken Hill Asso. Smelters 127, 799, 1121 

— Increases plant 144 

— Account of activities 1120 

Broken Hill. British, report 1104. 1121 

Broken Hill. Flotation at — Hebbard-Harvey 
machine at Sulphide Corp.'s Central mine 

231. 39S 

Broken Hill in 1915 127 

Broken Hill Prop Co 42, 71, 127. 128. 1121 

Broken Hill Prop. — Fire barriers 984 

Broken Hill South Co 127 

Broken Hill labor strike 373 

Broken Hill — Zinc Producers' Asso. Prop.. 

Ltd 1104, 1120, 1121 

Brooklyn mine, Mont 878, 1135 

Broivn, A. C 748 

Brown, A. H 706 

Brown, G. Chester 220 

Brown, R. D. Track turnouts *81C 

Browne, David H 706, 1046 

Brownell. F. H 579 

Bruderlin. E. J 958 

Bruere. Henry 367 

Brunner. Mond & Co 426, 427. 967. 1024 

Brunswick Con.. Calif "6, 332. 666 

— Report: costs 904, 1115 

Brush. E. Lead sales market 569 

Bryant's method of shaking bags by com- 
pressed air 185 

Buena Vista Iron Co 55 

Buffalo Con., Utah 334, 712 

Buffalo-New Mex 112 

Buffalo, Ont 33. 582, 668, 712, 871, 876 

Building a science 272 

Building — Mine-plant office •lllS 

Building vibrations. Study of; 368 

Bullion dist., Ida 161 

Bullwhacker, Mont. 110, 199, 163, 242, 280, 

333. 711, 754, 878, 1131 

— Drilling from suspended ladders 'OSe 

Bullv Hill. Calif 241, 426. 427 

Bund Copper, Calif 752 

Bunker Hill. Ariz 75, 105, 279, 538, 651, 835 

Bunker Hill. Calif 962 

Bunker Hill & Sullivan, Ida. 76. 108, 177, 

331, 711, 871 

—Report 994 

— Kellogg smeltery planned 660 

— Smelting works at Kellogg •868 

— Falling-rope Indicator •186 

— Malm process 679, 864 

Burbridge. Frederick E 706 

Burch. L. L, Inspector 1004 

Burchard, E. F 28 



Page 
Bureau of Labor Statistics — Workmen's Com- 
pensation laws 88 

— Lead poisoning 90 

Bureau of Mines : 

— Abstracts of Current Decisions t917 

— Accidents, Body chart for 'lOSO 

— Accidents In 1914 -..571, 'eSS, 641, 659 

— Acetylene, Exploslblllty of 10 

— Appropriations 172 

— Calif, safety work. See "Calif. Industrial 
Accident Comm." 

• — Carbide lamps — Copper dangerous? 859 

— Chemical advisory committee 1088 

— Denver headquarters removal 369 

— E.xplosives, Papers on 349 

— Gas, Rock, at Cripple Creek 888 

— Gasoline locomotives in relation to health 645 

— Metallurgical bulletins. Some 89, 90 

— Panama earthquake danger 529 

— Petroleum products mfr |917 

— Quarry accidents in 1914 176 

^Safety-flrst exhibit. Wash., D. C 270 

Bureau of Standards. Invar and Related 

Nickel Steels t807 

— Table of heat-conducting and insulating 

materials 1020 

— Standard test-screen scale 1104 

Burette-fllling device •781 

Burgess, R. J. Sampling and mapping 551 

Burgren. Arthur W 237 

Burma Corp. ; Bawdwin mines 20, 137. 829, 

1007, 1121 

Bums, W. T 49J 

Burr. William A 157, 409 

Burrell, G. A. Gas. Cripple Creek 888 

Burro Mtn. Cop. Co 11'2, 540, 651, 799 

— Report 732 

Burrows. A. G 918 

Burrows', L. P., nickel treatment 873 

Bush-Baxter, Ariz 105, 538 

Bush & Crawford. Ariz 454 

Bush, John M 579 

Business elBciencv 784 

Butcher. E. W. R. Standard sub turns.. •1029 

Butler, B. S. Utah deposits 102, 432 

Butler Bros., Minn 261, 1091 

Butte-Alex Scott. See "Anaconda." 

Butte & Bacorn 667, 708. 754, 798 

Butte-Ballaklava 242, 372, 623, 711, 878, 922, 

963, 1051 
Butte Central, Butte Detroit and Ophir mine 

499, 754, 798, 859, 875, 1024 

Butte-Columbia Mg. Co 922,960 

Butte consolidation rumors 199, 1131 

Butte-Duluth 29, 32, 110, 199, 280, 067, 754, 

836, 878, 960 

Butte & Ely 1132 

Butte & Gt. Falls 110, 242, 536, 623, 667, 

711, 878, 1051, 1135 

Butte & Helena Whitlach 280 

Butte labor— Notes 109, 111, 239. 240. 412, 

750, 875, 1003, 1047, 1090, 1131 

— -Anaconda employees 141 

Butte & London 32, 199, 372. 499. 667, 711, 

836, 878. 1131 

Butte-N. T 280 

Butte shafts. Depth of 141 

Butte & Superior : 

—Elm Orlu litigation 11. 242, 919, 1051 

— Decision, with map ^274 

— Annual report 737, 742 

— Quarterly reports 455. 484, 937 

—Notes 32, 50, 99, 110, 160. 163. 202. 280. 
333, 499, 539, 610, 623, 641, 667, 754, 833, 

871, 878. 963. 1051 

Butte & Zenith Cy 455, 836, 1051 

Butters companies, Salvador 120, 1052 

Buying and selling non-ferrous metals in 

South Am 292 

Byllesby smeltery, Poteau, Okla 584 



C. O. D. Con., Nev 455, 1051 

C. 0. D. mine. Colo 752 

Caballo Mtn.. N. M 456, 1052 

Cabinet, Handy packing •690 

Cable. See "Rope." 
Cahleway. See "Tramway." 

Caceres dist., Colombia 296 

Cache Creek Dredging Co 101 

Cactus Queen, Ariz 1092 

Cadmium and zinc. Volumetric determination 

of 1075 

Cadmium in 1915 66 

Cadmium, Precipitation of 865 

Caetani, Gelasio 617 

Cage, Man, at Inspiration ^476 

Cages, Device for chairing •SIS 

Cages, Folding safety gate for •lllj 

Calaveras Con., Calif 104S 

Calaveras Cop., Calif. 75, 201, 371, 1092 

Calaveras Mg., Calif 1133 

Calcium hypochlorite for water sterilization. . 562 

Calculass. Management 906 

Caldo Mg. Co 77. 114, 138,139 

Caldwell Chemical. Ind 76 

Caledonia mines, Ida 177, 331. 333, 372, 994 

Caley. Frank. Colo 76 

Calgary oil field 961 

Calhoun claim. Calif 1005 

California antimony 556 

Calif. Chrome Co 581 

Calif, copper 48. 199 

Calif. Counties. Mines and Mineral Resources 

of t705 



THE ENGINEERING & MINING JOURNAL 



Volume 101 



Calif, dredging (see also "Dredge") — In 

11)15 100, 107, 199,550 

— Correction as to output 248 

Calif, gold and silver 43. 199 

Calif, gold discover.v — Site and monument. .*1036 

Calif. Gold Mines. Forbestown 30 

Calif. Gold M. & D 31, 202 

Calif. Industrial Accident Comm. — Reports 

208, 104( 

— First aid work in state 176, 1130, 1131 

—Mine-safety work 220. 1028 

— Urging safet.v co-operation 3b9 

— Hookworm and tuberculosis 8i5 

—Safety Bear Club 1028 

Calif., Labor Laws of • • • ■ • • ■ • 1 9" 

Calif, laws 29, 199, 277, 352, 452, 536 

Calif, lead and zinc 1=» 

Calif. Magnesite Co 5d9 

Calif. Manganese Co ik' ' Ho? 

Calif. Metal Producers' Asso 220, 1130, 1131 

Calif, mining in 1915 J?' 

— State Bureau mineral statistics SaO 

Calif. -Ore. Power Co 496, 833 

Calif, petroleum: 

—Statistics for years 80, 167, 199, 468 

—Monthly statistics. . .11, 428, 593, 882, 9d2. 1131 

— Independent Producers' figures 795 

—Geology north of Coalinga 104 

-Storms wreck derricks. .199, 236, 277, 327. 411 

—Land cases ^^®' ,?„ 

— Area of proved land ^oo 

—Various notes 239, 277, 331, 369, 496. 536. 

919, 1047 

Calif, production, various 199 

Calif, quicksilver 67. 68, 199, 418. 508 

Calif, spelter 608 

CaUf. St. Mg. Bureau 159 

— Quicksilver-ore concentration study 1033 

Calif. & Tonopah 32, 1051 

CaUf. Trona Co. (see also "Potash, Searles 

Lake") 149. 277 

Calif., Univ. of 1<"'2 

Callow process. See also "Flotation." 

Callow flotation, Cobalt, Ont 876 

Callow, J. M.. on flotation 97, 99 

Calumet & Ariz, — Mitchell top-slice and cav- 
ing svstem *545, 658 

— Oilman cut-and-flll system *631 

—Notes, etc. 24, 52, 53, 55, 105, 414, 487, 621, 

886. 1049 

—New Cornelia notes 75. 91. 371, 710, 834 

— New Cornelia report 530 

Calumet & Hecla : 

—Production in 1915 200. 8il 

— Tailings-reclaiming dredge '488 

— Proflt-sharing 612 

— Semicentennial celebration ; medals for old 

eraplovees. ete 1122 

— WTiite Pine mine — Notes 51. 141.200 

— Tamarack purchase question 582, 709, 869. 

944, 1050 
—Various notes 51. 140. 161. 240. 278. 415. 

539. 622. 834. 955. 1048, 1093 

Calumet & Jerome 877 

Cam & Motor. Rhodesia 137 

Cambria Steel Corp. 35. 71. 166, 326, 337, 

375. 1136 
Camp Bird. Colo. 180, 279, 333. 666, 1003, 1050 

—Report 399 

— Reducing capitalization 348 

Camphuis. George A 494 

Can you heat it ? 1039 

Canada. See also provinces and minerals by 
name. 

Canada coal 483. 484 

Canada coal resources 103 

Canada copper 48, 483 

Canada Cop. Corp. (see also "Brit. Col 
Cop. Co.") — Smelting operations in 1915.. 1074 

—Note 964 

Canada, Eastern, ores. Markets for 597 

Canada ferrosilicon 585 

Canada gold 43, 483 

— Assay OfHce statistics 283 

Canada iron, etc 483, 484, 593, 997 

Canada labor conditions 528 

Canada lead 483, 484 

Canada mineral production 483 

Canada — New law badly needed 1038 

Canada petroleum 483 

Canada potash regulations 1091 

Canada. Pre-Cambrian gold fields of central 275 

Canada silver 483 

— St.itistlcs of producers 871 

Canada zinc 483. 484. 608 

— Bountv 796 

Canadian Collieries (Dunsmuir) Ltd 269 

Canadian Cop. Co. See "International 

Nickel." 
Canadian corporations, British decision af- 
fecting 453 

Canadian-Cuyuna Ore Co "404 

Canadian Exploration Co 1 21 

Canadian-Klondyke Mg. Co 101, 223. 416, 1007 

-Report 399 

Canadian mineral resources 1108 

Canadian Mg. & Explo. Co 1083 

Canadian Mg. & Finance Co. (see also "Bol- 
linger") 78. 796.834 

Canadian Mg. Inst, meeting, discussion, etc. 

490. 342, 486, '527, 532 

—Notes 237. 535 

Canadian Natl. Clay Prod. Asso 330 

Canadian nickel controversy, refinery planned, 
etc. 370, 418. 447, 497, 533, 580, 597, 620. 

626, 665. 709 
Canadian tax on proflls..413. 486, 490, 920. 961 



Page 
Cananea Con. (see also "Greene") . .52, 416, 879 

Cape Cop. Co 33 

Capital mine, Colo 31,415 

Cappelen Smith, E. A *313, •321 

Car and rolling side-dump tipple design *182 

Car for drills. Cop. Queen •1102 

Car for flat stopes ^395 

Car loader, Savings due to underground 184 

Car return. Automatic. Belmont ^1112 

Car, Self-propelled dump. Orenstein- Arthur 

Koppel ^1035 

Car wheels bolted together as cable roller. .•1075 

Car wheels. Mine ; flanges 982 

Car, 10-ton dump, Granby *354 

Car. See also "Cars." 

Carbide lamps — Copper dangerous? 859 

— Explosibility of acetylene 10 

Carbolite Chemical Co 582 

Carbon-dioxide indicator, Pocket *647 

Cardiff, Utah 114, 373,608 

Carey, Joseph J 1088 

Caribou Mines & Mills Co 412 

— Peculiar magnetic phenomenon *444 

Carlin, Henry. Death of 198 

Carlisle mine. N. M...32. 540. 754, 879, 1052. 1094 
Carlson. J., poisoned by cyanide. .. .141, 444. 698 

Carman Con. Cop. Co 455 

Carmichael. A. D., Death of 198 

Camahan. Charles T 367 

Carnahan. T. S. Underground methods, Utah 

Cop. Co '216 

Carnegie Steel Co. sulphur studies 595 

Carney Copper 836 

Camotite. See "Radium." 

Carpender, W. P., Death of 450 

Carpenter, William H 28 

Carr bits for drill steel •IS 

Carroll, Frank IV.'M 

Carrigan, J. J 491 

Cars. See also "Car." 

Cars, Dumping waste •llll 

Cars, Concentrate and calcine, Miami smelt- 
ery *563 

Carson, Col. John 157 

Carter, C. M. — Carter Mg. Co., Colo. — Drill- 
steel breakage 14 

- — Dropping ore through 1.135-ft. raise *262 

Carter, Emmett B 579 

Carter Gold Mg., Ariz 454 

Cartridge-brass manufacture ^975 

Gary. Webster P 1001 

Casapalca cop. smeltery •782 

Case, B. H. Why metric system ? 950 

Case low-pres. oil forge ^818 

Castle Dome. Ariz 710 

Castle Rock. Ida 202, 333, 798 

Castner-Kellner Alkali Co 967, 1024 

Catdnou Co., Chile 118 

Catskill Aqueduct, Bypass arotind leaky tun- 
nel in •260 

Cauto Mg. Co 55, ^587 

Caving system. Mitchell top-slice and...^545. 658 

Cedar. Miners' use of, in Can. N. W 984 

Cedar-Talisman, Utah 164, 243, 334, 373, 623, 837 

Cement, CaUf 850 

Cement. Canada 475.483 

Cement, How to store 1030 

Cement kilns. Potash from — Security Cement 

and Lime Co 455 

Cement. Portland, output 275 

Centennial, Mich 140, 200 

—Report 945 

Centennial-Eureka, Utah 115. 876. 1064 

Central America, etc.. gold 43 

Central Am. Mines, Ltd 879 

Central Am. mining in 1915 120 

Central Chile Cop. Co 187 

Central Eureka. Calif 877. 1049 

Central Mg.-Rand Mines group 124 

Central Zinc Co 153, 1095 

Century Zinc Co 622, 1006 

Cerbat Mtns. deposits. Ariz 11 

Cerro de Pasco Cop. Corp. 24, 118, 487, 661. 

712, •783, 923, •lOL? 

Cerro de Pasco dist., Peru *1015, •847 

Cerro Gordo, Calif 75. 107, 371, 797. 877 

Certigue Dredging Co 1094 

Ceylon graphite exports 72 

Chain grizzly. Rowe mine ^599 

Chairs. Transfer truck and 'lOTl 

Chairing cages. Device for ^818 

Chalsmith interlocking piston ring •lOSl 

Chamberlain. H. S.. Death of 579 

Chambers-Fcrland. See "Mining Corp. of 
Can." 

Champion mine. Ariz 279 

Champion, Mich. See "Copper Range." 

Chances in mining propositions 1083 

Channing, J. P.. in Aero Club '916 

Chapman Bros. & Longacre 798 

Chapman Smelting Co.. Calif 557 

Chapman's slimes treatment 992 

Charcoal Iron Co. of Am 1070 

Charging. Mechanical, of silver-lead blast 

furnaces. U. S. Smg. Co.'s. etc •885 

Charlton, D. E. Slack-rope Indicator •12 

— Float control for pump ^903 

Chart. Body, for accidents •1030 

Chart. Coal and oil cost ^555 

Chart. Expansion-bend •184, (correction)... 572 

Chase. Charies A 958 

Chase. E. E.. & Son 017 

Chatata Zinc M. & M 1136 

Chateaugav Ore & Iron Co 113 

Chemlral-englneerlng scholarships 826.869 

Chemical Engineers 663 

Chemical Products Co 900 



Chemicals and raw materials, Imports and 

exports 503 

— Fertilizing chemicals 543 

Chemistry, Modern, and its Wonders t705 

Chemists' Handbook, Metallurgists and t705 

Chicago hose-clamp tool ^941 

Chicago "Hummer" drill *565 

Chicago military engineering 706, 874, 1070 

Chichagof Mg. Co 135, 136, 371 

Chief Con., Utah 115, 278, 624, 712, 837. 876, 

1007, 1090 

—Report 373 

Chihuahua, S. VV., Metallurgy of native-sil- 
ver ores ^297 

Chicksan Mg. Co 102 

— Automatic pulp sampler ^524 

Chilano mine, Calif 1093 

Chile. See also "Braden." 

Chile copper 48, 53, 118.296 

Cihile copper — Buying, selling 292 

C;hile Cop. Co. ; Chile Exploration Co. ; 

Chuquicamata 53, 91, 118 

— Mine at Chuquicamata •307 

— Metallurgical operations •321 

— Tailings-disposal conveyors •359, 572 

— Furnace; laboratory — Photos •359, ^400 

— Laying tank bottom — Photo ^604 

— Leaching drums — Photo •111? 

— Tocopilla district 259 

Chile, Gold mining in 1110 

Chile in 1915 118 

Chile iron deposits 36, 53, 118, 869 

Chile — Mining at Tocopilla 259 

Chile nitrate 53, 118, 245, 259,376 

Chile, Smelting. Panucillo 187 

Chilean mills vs. stamps 15 

Chimney. See "Stack." 

China antimony. Hunan Province •637 

—Notes, etc 79, 742 

China coal 882 

China copper — Tungchuan mines 210 

China — Formosa resources 1060 

China gold 43 

China gold-coinage rumor 925 

China iron deposits 799 

China lead and zinc mine 1064 

China, New mining laws for 537 

China silver — Melting coins 1 009 

China tin 67 

China Cop 32, 77, 112, 668. 1135 

—Report 403, 736, 742, 900 

^Production for 1915 540 

Chisos Mg. Co 68. 3:-:t 

Cbloridizlng and leaching plant of Va. Smg. 



Co. 



Chosen. See also under "Japan." 

Chosen, Operations in 102, ^524, •10::« 

Christensen, Andrew 74s 

Christmas Con., Nev 32, 111 

Christmas mine, Ariz 621, 1005. 1092 

Chrome. Calif., deposits. . .454. 538. 797, 921. 

1005. 1133 

— Production 850 

Chrome iron ore as lining for reverberatory 

furnaces 267 

Chrome ore imports, exports 503 

Chrome ore. New (jaledonia 543 

Chrome ore tapping blocks 778 

Chrome steel vs. manganese 613, 907, 951 

Chromic iron ore production 808 

Chromite. Canada 483, 80fi 

Chromium Gold, Mont 622 

Chronology of mining — For 1915 73 

—Months of 1916 327, 487, 655, 869, 1024 

Chuquicamata. See "Chile." 

Church mine, Joplln dIst 1050 

("hum drill See "Drill." 

Chynoweth, B. F., Death of 918 

Cisco Mg. Co 1091 

Clapp. Frederick G 494. 706 

Clapper's bin-door operator •521 

Clark. R. V., Death of 157 

Clark. S. S 28 

Clark. William Bullock 1046 

Clarke. John M 198 

Classifler, Rotary-screen ore. Tough-Oakes 

mill •691 

Classifying technical literature 784 

Clay gasoline engine ^1025 

Clennell, J. E. Concentration formulas 17. 

187. 402. 612, 613 
— Estimating metallic aluminum In aluminum 

dust 813 

Cleveland-ClllTs Iron Co. : 

— Morris-Lloj-d methods 184, 222, •354, ^857 

— Morris-Lloyd drifting records 31,242 

—Lake Angellne notes 31. 408. 539,922 

— Various notes 76, lOS, 163, 242, 415. 836, 

878, 922. 901 

Cliff mine, Alaska 921 

Clifton-Morencl strike — Wage scales before 

strike 24 

— Assessment-work Interference 194 

— Strike settled i9j 

— New strike 362 41"! 

—Notes 30, 53, 74, 105, 161, 278, 369, 497, 

001, 833, 1004 

Climax mine, Ariz \\'^:\ 

Climax mine, Colo !!!!!! 752 

Cllnchfleld Products Asso ...'. 77 

Close. Fred B io4(i 

Clrmd. T. C. Collecting dust 357 

("Oj Indicator. Bacharach pocket •647 

Coal. Alaska — Imports 414 

— Mining near Seldovia ',',\\ 352 

— Fields opened to entry 1028, 1122 

Coal and oil fuels — Relative-cost chart. .. .'.•555 



January 1 to June 30, 1916 



THE ENGINEERING & MINING JOURNAL 



Coal and petroleum origins 

Coal and coke railroad traffic 

Coal, Australian, embargo 

Coal, Austria 

Coal, Belgium 

Coal. Brit. Col., and coke 2;i(j, 2ii9 

Coal. Canada 483 

Coal. Canadian, Paper on 

Coal. China 

Coal-dust firing in reverberatory furnaces 
Anaconda and other practice ; pulverizing 
Warford burner, etc 

Coal, Germany, and coke 

Coal, India 

Coal. Japan 

Coal-land decision, Utah 

Coal, Nova Scotia 484, 

Coal, Peru •846 

Coal, Russia, and coke 

Coal, Spain 715, '55, 

Coal, Spitzbergen. fields 

Coal tar and its products 

Coal. United Kingdom, and coke 284. 543, 840, 

Coal. U. S.. and coke 41, 

— Exports and imports 

Coal. Utah 

Coals. Heat values of 

Coast & Geod. .Surv. exhibit 

Cobalt coinage proposed. Can 

Cobalt, Ont., in 1915, etc 121, 475, 

Cobalt, Ont., Metallurgy of ores from 

Cobalt, Ont.. oil flotation 

Cobalt production. Can 483, 

Cobalt Red., Ont 

rockeriU's zinc redistillation 

Cock's Pioneer Gold & Tin Mines 

Coeur d'Alene (see also "Idaho"j — Produc- 
tion for 13 years 

— Production in 1915 

Coeur d'Alene Antimony 

Coeur d'Alene photos 

Cohen, Julius 

Cohn, A. Locomotive gong • 

Coinage, U. S. gold 

Coke. Ala., in 1915 

Coke-oven gas, Cottrell process for 

Coke, U. S 41, 

Colburn mill, Colo 

Cold Bay strike. Alaska 

Cole. A. A 490, 

Cole. A. N. Centrifugal pump 

Cole. T. F. — Ahmeek purchase 

Coleman. B. Dawson 

Collaring machine. Steel 

Colley. B. T. Metallurgical operations. Bra- 
den 

Collins, Edgar A 

Collins, G. A. Colo, mining 

Collln.s, J. H., Death of 

Colloids, Elec. charges on 

Colloids in ore dressing — Colloids and col- 
loidal slimes 

— Building a science 

— .Sedimentation and flooculation *429, 

— Rate of slimes settling 

—Control of ore slimes *763, ♦890, 

— Properties of slime cakes 1068. 

Coloma Hill. Calif 

Colombia. Caceres dist 

Colombia dredging. .102, 119, 456, 668, 879. 

— Pato report 

Colombia mining in 1915 

Colombia mining regulations 

Colombia platinum 

Colonial Cop., Ariz 

Colorado Con., Utah (see also "Beck Tun- 
nel") 754, ] 

Colo, copper 

Colo, dredging in 1915 

Colo. Fuel & Iron Co 181, 411. 619. 960, 

— Sunrise. Wyo.. photo " 

Colo, gold and silver 

Colo, lien law 

Colo. Manganese M. & S 1 

Colo. Metal Mg. A.sso 451. 496. 

Colo. Mg. Co.. P. I »188, *948. •989. •] 

Colo, mining in 1915 106. 

Colo, mining prosperity 1 

Colo.-Nev. M. & M 

Colo, petroleum 80. 

Colo. School of Mines 158, 277, 367. 369. 794, 

Colo. Scientific Soc *129. 

Colo. Springs Stock Exchange 

Colo, tungsten-ore milling < 

Colo. Utah Mines Op 76.1 

Colo, zinc 61, 180. 606. 

Colpitts, W. W 

Columbia Con., Calif 

Columbia , S. D 

Columbia Univ. — New professor 

— Engineering research plans 

Columbus. N. M. . region map 

Colusa -Leonard Extension 540. 1 

Comacar.nn 0. M. Co 

Comer & Co. ass.nv method 

Conmierce Mg. & Royalty Co 

Cnnimerclal movement. Precious metals 45. 
205. 

Commonwealth. Ariz. — Mill photos '229. " 

— Ken inding filter drums < 

Commonwealth Extemsion. Ariz 241, 621, 

Commonwealth. Ul.ih 

Compass direction, Changes in 

Compensation, Calif., and safety work. etc. 
176. 208. 220, 1 

Compensation laws of 1914 and 1915 



Page 

. 103 

. 503 

.1045 

,1139 

543 

484 

484 

103 

882 



847 
543 
1138 
624 



1109 
167 
503 



249 
272 
509 

•681 
990 

1105 
921 
296 

1094 
815 
119 

1064 



Page 

Compensation, Slont 88, 536, 795 

Compensation officials' conference 467 

Compensation, Ont 528, 687 

Compressed air. See "Air." 

Comstock companies' elections 29 

Compton Mines Co 1135 

Concentrate and calcine cars, Miami smelt- 
ery 'ses 

Concentrate sampler, Miami •422 

Concentrating quicksilver ores — Calif, study 1033 
Concentration. See also "Flotation," "Jig," 

"Classifier." 
Concentration, Braden Cop. Co. •315. 441, 603, 647 

Concentration, 'Cop. Range. — Photos '19 

Concentration formulas corrected 17. 187, 402. 

612, 613 

Concentration, Tungsten-ore. Colo ^717 

Concentration, Van-Roi mill •464 

Concentrator decks. Repairing Wilfley ^1114 

Concentrator, Natl. Cop. Co ^696 

Concentrator, New Granby, Mo ♦557 

Concrete — aggregate measurement in revolving 

boxes •1030 

Concrete mi.Ker, The largest •730 

(Concrete stack, Baltic mill •1116 

Concrete work. Trouble in 807 

Concreting Barron shaft, Pachuca *676, 700 

Congor mine, Utah 964, 1136 

Congress, How coal and oil leasing bill was 

discussed in . '. 493 

Congress, Legislation In 154, 172, 196, 272, 

405, 449, 491. 568. 573. 615, 619, 642. 655. 

660, 746, 792. 869, 872, 875, 1064, 1083 

Congress, Mining men for 492 

Coniagas Mines, Ltd. 78, 164, 665, 668, 754, 

871, 1094 

— Air-drill repair costs 817 

— Report 399 

Conklin, H. R. Precipitate-bag holder •526 

Conkling, C. C, Death of 1001 

Conkling Mg. Co 453, 974 

Conner, Eli T 535 

Connolly, D. H. Target for determining 

azimuth •eoi 

Connors', William, tungsten strike 680 

Conrey Mg. Co 412 

Conservation, Improved mining and metallurgy 

as aid to 291 

Consol. Amador (Old Eureka or Hetty 

Green) 96, 369, 414, 538, 664, 708, 710, 

835, 962, 1092, 1133 

— Poetry on Old Eureka 747 

ConsoL Ariz. Smg. 30, 52, 73, 106, 162, 666, 

710, 962 

— Seasoning reverberatory furnaces ^721 

Consol. Coppermines Co Ill, 735, 1094 

Consol. G. F. of So. Af 136 

Consol. Interstate-Callahan 107, 17", 499, 753, 

798, 876, 1050 

— Report 981 

Consol. Langlaagte stamp mill ^264 

ConsoL Marsh Mines Co 1134 

ConsoL Mines Co., Calif 30, 332, 498, 752 

ConsoL Mines & Reduc, Colo. ..622, 750, 753, 836 

— Report 481 

ConsoL Mg. & Smg. Co. of Can. 25, 52. 58. 

90, 94, 268, 269, 270, 281, 370. 389. 413. 

426, 582, 799. 871 
Consol. Nevada-Utah 77, 203, 712, 837. 879, 1051 

ConsoL Tungsten Co., Nev 1004 

Consol. Virginia, Nev 29 

Constant-flow device ^1029 

Constitution, Ida 1006 

Construction, New. in 1915 75 

Contraband scheellte 1039 

Contract, Breach of mining 981 

Controller, Lilly hoisting. Anaconda •eSS 

"Conversational geology" at Oatman 1119 

Converter. Lifting 210-ton, Anaconda's ♦396 

Converters, International smeltery ^423 

Conveyors, Tailings-disposal, Chile •359. 572 

Cooling gas-engine water in cyanide plant.. •860 

Cooney, Lawrence 663 

Copper after the war 235 

Copper, Alaska 48, 52, 115 

Copper and lead mining, Proflt-sharlng in 

447, 612 

Copper, Ariz 48. 53 

— Mining and metallurgy 53 

Copper. Australasia 48. 127, 827 

Copper Basin, Ariz., cop. discovery 371 

Copper, Bolivia 48, 119, 174. 296 

Copper Boy, Utah 114 

Copper, Braden, metallurgy •Sla 

Copper, Brit. Col 236, 269. 484 

Copper. Brittleness of annealed 820 

Copper. Calif 48. 199 

Copper. Canada 48, 483 

Copper carbide lamps dangerous ? 859 

Copper Chief, Ariz... 75, 106, 371, 710, 876. 

921. 962 
Copper. Chile (see also "Chile Cop. Co.." 

"Braden") 48. 53. 118. 259. 296 

— Mining and metallurgy. Chuquicamata •307, ^321 

— Buying and selling ore 292 

Copper, China — Tungchuan mines 210 

Copper chloridizing and leaching plant of 

Ariz. Smg. Co ♦803 

Copper Cliff (see also "International Nickel 

Co.'')— Determining flue dust ♦SOS 

Copper companies. Position of 745 

Copper content of slag. Decrease In, at De- 
troit plant 1033 

Copper converter. Lifting Anaconda's *39G 

Copper. Cuba and Trinidad 48. 55. 397. 540 

— Mining in Oriente Province ♦587 

Copper dividends 614 



Interpretation of assay 
-Opcrati 



Page 



Copper drill holes 

curves for 

Copper electrolysis. Jtarltan \flis.- 

of engine-driven generators 730 

Copper flotation. See "Flotation" and proper 
names. 

Copper. France, Imports 810. 1010 

— Havre market , lOOO 

Copper freight ease, Tacoma 1 137 

Copper, Germany 48 

Copper in shipbuilding 574 

Copper, .lapan 48. 133, 956, 1010. 1020 

Copper leaching. Ammonia, Kennecott 788, 935 

Copper leaching — C. & H. tailings dredge ... ^488 

— Leaching plant to operate io48 

Copper leaching, Chuquicamata ♦313, ♦321. 

♦604, ♦111? 

Copper leaching In 1915 91 

Copper leaching. New Cornelia 33, 55, 91, 530 

Copper leaching plant, Utah to build 701 

Copper, London standard 447, 491 

Copper-matte fusion. Effect of borax in ^648 

Copper metallurgy in 1915, Ariz, and else- 
where 53, 90 

Copper, Mexico 48 

Copper, Mich 43, 51', 20O 

— By individual mines 200 

— .Mining in 1915 108, 140 

Copper miners. Contented 197 

Copper, Mont 48, 50, 109 

Copper, New Mex 48, 112 

Copper. Ontario 475, 484, 597 

— Origin of nickel-copper deposits: map ♦SIX 

Copper ores in flne condition, Roasting-Mat- 

ting — Klepinger-Krejci-Kuzell patent ^479 

Copper ores. Secondary enrichment of 1127 

Copper, Peru 48, 118, 296, ♦846 

— Cerro de Pasco district ♦1015 

Copper, Production and stocks of 271 

Copper production statistics — Remarks 197 

— Correction 272 

Copper, Quebec ........'..' 484 

Copper Queen, Ariz 24, 52. 53. 538. 1049 

—Reports 651. 693, 695 

— Churn drilling costs 226 

— Safety and accidents ...'. 659 

— Safety and welfare work 723 

— Measuring dust losses ♦loei 

— Drill and tool-sharpening shop ^1099 

Copper Queen Gold, Ariz, (see also "Stod- 
dard Mines") 30 

Copper Range Co. (Champion, Trimountain. 
Baltic, etc.) : 

— Production 200 

— Trimountain and Champion mills ♦IS 

— Baltic mill ♦llie 

— General report 944 

— Baltic report 739 

— Trimountain report 862 

— Champion report 945 

—Notes 51, 455, 499, 539, 622, 667, 963 

Danish pebbles said to be obtaioablfr 

(reply to 455) 618 

Copper refineries, Electrotytic, U. S ♦SO. 51 

Copper reflning capacity, A. S. & R 912 

Copper reflning. Multiple vs. series electro- 
lytic 9 

Copper, Rhodesia 136, 137.373 

Copper, Russia 48, 125 

Copper sale of 60,000 tons 26 

Copper, Slocan, Saving 860 

Copper smelteries. North Am ♦SO, 52 

Copper, Spain 48, 755, 1138 

Copper statistics, situation, etc. : 

--Market and prices, former years ^44, ♦47, 48 

— London prices ^44, ^47, 49 

— Market highest in 40 yrs 329 

— The bear squeeze 719 

— Recent sales 746 

— Current situation 745. 1043 

Copper stock tip miscarried 273 

Copper stocks. The 407 

Copper sulphate. U. S 41, 714 

Copper trading, N. Y. Metal Exchange (see 

also "New York") 863. 871 

Copper, T'nited Kingdom — Buying rules 244 

— Statistics 335. 347. 1109 

Copper, U. S 41. 197 

— By states 48 

^Production and stocks — Our totals 271 

—Ore. 1911-1914 128 

— aiine, smeltery; refinery map ♦SO 

— Imports and exports 446, 275, 912 

Copper, Utah 48, 115, 140 

Copper, World 48, 197 

— By countries 48 

Copper, Yukon 484 

Coppcrfleld mine, Ariz SO, 162 

Coppers, Porphyry, In 1915 742 

Coppers. Volumetric, Sodium nitroprusslde as 

reagent for 327 

Corbln Cop.. Mont 539.667 

Cord. J. B 663 

Cornelia, Ariz. — Model town 834 

Corocoro. Bolivia, companies. .119, 174. 487. 837 

Corona Quicksilver. Calif 921 

Coronet Phosphate Co ♦1030 

Corr.ill Gold Hyd. Co 31 

Corrosion prevention. Pipe 601 

Cortez .\sso. Mines 243 

Corthell, E. G., Death of 958 

Corwln, Frank U 918 

Cossak Mg. Co 77,112 

Cost. See also reports of companies by name. 

Cost, concreting shaft. Pachuca •679. 700 

Cost estimates. Engineers' 793 



THE ENGINEERING & MINING JOURNAL 



Volume 101 



Page 
Cost of doing things— Churn drilling. Cnp. 
Queen. Sacramento Hill: 73,000 blast. V,. 
Va. quarry ; unit costs. New T'tah Bing- 
ham ; plant cost per kw.. Bay State Ky. 

226, (correction) 394 

—Heating tniildings ; operating aerial tram- 
wavs; Portland Canal Tunnels crosscut 

ndi't ^ ■■■,■■■,■,■■ ^^^ 

— Wage rates. Treadwell group. Douglas Isl. ; 
Brunswick Con. mining and milling; com- 
parative cost of distillate ; boiler clean- 



ing 



.1115 
. 151 



•554 



Cost, Seneca -Superior silver 

Cost system. Mine, Can. Cop. Co 

Cost, Wellington Mines operating 

Cost, Yuba tractor haulage 

Costa Kica in 1915 ^^): 

Costs, Air-drill repair ol' 

Costs, Chum-drill prospecting, Morenci 'Si 4 

Costs, Dragline-excavation 9*0 

Costs, Drifting, Morris-IJoyd *35o 

Costs, Mineville sloping — Correction 22 r 

Costs, Mining, Utah Cop *218 

Costs, Pumping, Old Dominion »902 

Costs, Band— Chart • 'SOg 

Costs, Relative, of coal and oil fuels — Chart 'ooa 

Costs, Road and ry., Alaska 348 

Costs. Sunset mine and mill 520 

Costs. Tool-sharpening. Cop. Queen »1102 

Cotton, Joseph B 1130 

Cottonwood- -Vm. Fork region 432 

_Xotes 160, 709, 796, 920. 1132 

Cottrell, F. G. Recent progress in electrical 

smoke precipitation *385 

Cottrell process "9. 90. 92 

Cottrell process. Miami *380. *423 

Cougar Gold. Ore 582, 799 

Coughlin, Frank H M9 

Coupling hook for mine motors *643 

Coverdale, W. H 918 

Cowboy mine. Globe, Ariz 33- 

Cowlioy M. & S.. Twin Buttes. Ariz 1049 

Cowles, Russell A lOSS 

Crane Co.'s e.\pansion-bend chart 'ISi, (cor- 
rection) 5 1 2 

Crane Co.'s 4-way valve '730 

Crane. W. R. Railway transportation. 

AUiska 347 

— Rifling of diamond-drill cores 902 

Cranston, Robert K Jdi" 

—Gold dredging in 1915 100. 248 

Crary, M. W., Death of 28 

Craven. A., on subway cave-ins 873 

Crean Hill shaft sinking *774 

Creighton mine shaft sinking 774 

Creole Mg., Utah 203. 243,334 

Cresson mine, Colo IOC, 180, 1131 

— Air compressor photo '586 

Crimora mine, Va 1094 

Cripple Creek Cyanide M. & M 76 

Cripple Creek deep-ore finds 919 

Cripple Creek Gon. M. & E 753 

Cripple Creek gold discoveries 580 

Cripple Creek Gold. Lure of tfll7 

Cripple Creek. Rock gas at 888 

Crist property. Colo 31 

Croesus mine, Ont. 33, 121, 203, 243, 540, 668, 

799, 837, 1007 

CrofT mine. Utah 203, 334 

Crosley. William '06 

Crosscut-adit cost. Portland Canal Tunnels 987 

Crown Jewel, Colo 922 

Crown King tunnel, Ariz. — Wheeler proj- 
ect 620, 1092 

Crown mine, S. D 964 

Crown Mines, Transvaal 809 

— Electric hoist *265 

— Record tonnage hoisted 786 

Crown Pt.-Belcher— Yellow Jacket fire 1007. 

1024, 1133 
Crown Keserve, Ont. 33, 456, 668, 871, 923. 

964, 1136 

— Annual statement 281 

— Report 821 

—Globe Con., Calif 875 

Crows Nest Pass Coal Co 8. 78 

Crucible making. Morro Velho 11 

Crucibles, Carlrldge-brass '979 

Crushing fineness for assaying 187, 445, 568 

Crusblng-roU frame repair '562 

Cry.st:il Cop. Co 836 

Cub;i copper 48, 33 

Cuba r,.p. Co.— Flotation, etc. 55, 397, 587. 

591, •592 

Cuba— M.ilahambre mine 55, 540 

Cuba, Mining In Oriente Province, Copper 

and iron ^587, •eOS 

Cuban mine. Explosion in 215 

Culver, F. F 1130 

Cundy, J. H., Death of 28 

CunnlnBham, F. W 450 

Cunningham, G. H 1001 

Cunningham, J. C. J. Lead smelting 90 

Cuprite Cop. Co 202 

Curie, J. H 1039 

Cushman, A. Atmospheric nitrogen 448 

CusI Mg. Co 116 

—Officials murdered 151, 'igo, 195, 236, 1045 

Cut-and-flll system, Gilman •631 

Cuyun.i drop-shaft sinking ^404 

Cu>Tina-t>uluth ; Cuyuna Mllle Lacs. See 
"Arnerlfan Manganese." 

Cuyuna Iron & Manganese 372 

Cuyuna rail ore shipments 503 

Cuyuna-Sultana 455, 622, 667, 796, 836, 

878, 1050 



Page 

Cuzco, Peru 'Sio 

Cvanide, Flotation replaces, Oneida Stag...»142 

Cyanide for antimonial ores 224 

Cyanide. Gold dissolution in 356 

Cyanide machinery — Dorr Co 654 

Cyanide mill. Nevada Packard *247 

Cyanide mill. Tough Oakes 95 

Cvanide mills, Philippines •188, *442. 'OlS. 

•989, ^1117 
Cvanide plant. Cooling gas-engine water in *860 
Cvanide plant, 50-ton, Frontlno & Bolivia 

Co.'s. Colombia 263 

Cyanide, Poisoning fish by 23 

Cyanide poisonnig. Slow 141. 444, 608 

Cyanide practice in 1915 94 

Cyaniding agitator, Devereux 823 

— Power for slimes agitators Ills 

Cyaniding agitator. Laboratory ^440 

Cyaniding, Chiksan — Pulp sampler '524 

Cyaniding, El Oro — Galena in ores 810 

Cyaniding — Estimating metallic aluminum in 

aluminum dust 813 

Cyaniding — Litharge as substitute for lead 

acetate 440 

Cvaniding — Rewinding Alter drams '819 

Cvaniding, Sons of Gwalia 224, 225, 263, 356 

"Cvprus," Cruise of the •1040 

D 

Dabney Oil Co. case •. 199 

Daggs copper deposit, Ariz 1049 

Daiquiri. See "Cuba." 

Daisy mine, Calif 581 

Dalv-Judge, Utah (see also "Judge Mg. & 
Smg.") 33, 77, 114. 139, 277, 278, 453, 537, 

668, 754, 869, 875, 879, 1048 

— Report 946 

Daly on Kiruna ores 103 

Daly West, Utah 139, 243, 277, 278, 624, 964, 1007 

Dam, Pl.ittsburg, failure 1129 

Dana's S.vstem of Mineralogy fOS 

Daniels, W. H., Death of 1001 

Danielson, Ole, Death of 198 

Darrah. J. L., Death of 450 

Data, world's principal mines 86 

Daunais, Oliver. Death of 367 

Davenport, L. D. Shoe for hauling rails. . .•1071 

Davidson, W. H., Death of 409 

Davis, A. v., on aluminum 81, 82 

Davis, C. A., Death of 874 

Davis-Dalv, Mont. 32, 199, 202, 280, 333, 415, 

455, 539, 711, 754, 798, 9S3, 1131 

—Report 399 

Davis, Frank 450 

Davis Sulphur Ore Co 352 

Davis, W. Walley 535 

Davis, Willis P 450 

De Deken, Albert 1130 

De Hora dredge, .Mont 372 

De la Fontaine, Ariz 75 

De la Marliere, L. C. Dredging, Mozambique '673 

De Lummen, M. Blende roasting 1021 

De Wolf, W. P. Tungsten, Ariz 680 

Dean mine, Minn 32, 163 

Death Val. region activity 1090 

Deaths in 1915 55 

Del Carmen mine, Mex 33 

Del Mar, A. Tube-mill lining •224 

Delap Development. Alaska 201 

Delmonico Leasing. Colo 333 

Delplace roasting furnace 1022 

Delta Con. Gold, Calif 76 

Denis, Theo. C 1046, 1088 

Denver M. & M 666 

Denver mint receipts 411 

Depreciation, Principles of 1534 

Derry Ranch Gold Dr. Co 101, 711, 750 

— Description of dredge •ISO 

Desllverization, Lead 90 

Desloge Lead Co 60 

Detlnnlng, Electrolytic 186 

Detonators, Always stronger 187 

Detroit Cop. Mg. Co. (see also "Clifton- 
Morencl strike") 52, 194, 201, 369, 413, 414, 651 

— Chum-drlU prospecting •969 

— Decrease in copper content of slag; other 

impvts 1033 

Detroit Iron & Slecl Co 798 

Devereux slimes agitator 823, 1118 

Devereux, W. B., Jr 237 

Devine, John C 1088 

Devlin, W. F 958 

Dewatering flotation concentrates, Anaconda 

•469, 475 

Dewey decimal system 784 

Dewey, F. P. Crushing fineness for assay- 
ing 187, 445, 568 

Diagrams, Tape sag and slope ^776 

Diamond drill. See "Drill." 

Diamond Match Co 624 

Diamond mining, Brazil 120, ^761 

Diamond trade restrictions 132 

DiamondBcld Black Butte 32 

Diamonds. British Guiana 726 

Diamonds. Transvaal 124, 482, 642 

Dlckerman, Nelson 494 

DIckerson, E. H. Samples and their Inter- 
pretation ^933 

Dickinson's, S. D., first-aid work 170 

Dickson. It. H. Mitchell top-slice and caving 

system ^545. 658 

— Gllnian cut-and-fill system '631 

Dickson Zinc, Ariz 454 

DIehl. A. N 367 

Diesel Engine in Practice t917 

Dike and slate analysis 433, (erratum).., 592 



Page 

Diller. .1. S. Chromic iron ore 808 

Dillingham, G. B 918 

Dinkev, Alva C 450 

Dishes, Platinum vs. gold ^780 

Distillate, Comparative cost of 1115 

Dividends and profits. Rand •SIO 

Dividends, Copper 614 

Dividends — In 1915 41 

— Month of December 27 

—Tables for 1915 83 

—Months of 1916 273, 449, 661, 830, 999 

— Latest and total (page tables) 377, (cor- 
rection 513), 883 
Divining-rod mystery — Von Uslar at Mine- 
ville 651 

Dixon, J. M. Using old tube-mill liners... 185 

Dober mine, Mich 711 

Dock, Ore. La Playa, Cuba •605 

Doctor mine. Colo 180 

Dodd, Alfred W 494 

Doe Run. See "St. Joseph." 

Dog, Roller, for draglines *2-- 

Doheny, E. L 104i; 

"Dollar exchange," South Am 531 

Dolly Varden mine, B. C 999 

Dolores. Mex 164. 944 

Dome E.xtension, Ont 668, 799,964 

Dome Lake, Ont. 121, 456, 500, 540, 712, 

879 1136 
Dome Mines, Ltd. 78, 96, 121, 203. 373, 483, 
500, 540, 620, 668, 712, 799, 879, 1007, 

1052, 1094 

— Shaft-sinking method ^774 

Dominion. See also "Canada." 

Dominion I. & S. Co. report 398 

Dominion Band, Ont 1007 

Dominion Reduction, Ont 334, 540 

Dominion Steel Corp 8, 78 

Donora. See "U. S. Steel Corp." 

Dont's for the skinner 943 

Door-operating mechanism for ore bins. Clap- 
per's '521 

Door supports. Boiler-furnace •261, •560 

Dorn gold mines, S. C •1019 

Dorr Company. The 654 

Dorr thickeners at Joplin 834 

Dorr thickeners. Inspiration mill •866 

Dos Estrellas, Mex 209, 210 

Douglas Isl. See "Alaska — Treadwell group." 

Douglas mine and Anaconda 32, 16S 

Douglas, Walter. Copper, Ariz 53 

Douglass, W. C 9.58 

Douglass, E. E. Metallurgical operations, 

Braden •SIS 

Down Town area, Leadvllle. Pumping; Down 
Town Mines Co. 76, 106, 642. 665. 919, 

1110, 1131 

Dowsing — Von Uslar at Mineville 651 

Draft gages — Liquid manometers •942 

Dragline excavation costs 940 

Draglines, Roller dog for '222 

Dragon Con 624, 668, 712, 923, 1052 

Drawings — Blueprint tube •1112 

Dredge, C. & H. tailings ^488 

Dredge, Derry Ranch gold •ISO 

—Note 101 

Dredge, Launching Marigold No. 5, In Yuba 

basin ^808, (erratum) 919 

Dredge, Launching Y^uba No. 15 619. 664. ^949 

Dredge, Natoma No. 4, with two tailings stack- 
ers for resoillng '169 

— Neill jigs on No. 7 ^207 

Dredge Siberian gravels. Lena Goldflelds 

will 719 

Dredge, Steel's jig for gold •692 

Dredge, Yukon Gold Co.'s No. 9 ^146 

Dredging. Alaska and Yukon 101, 115, 550 

. — Berry's locomobile dredge •172 

— Kuskokwim dredge. Candle Creek 805 

Dredging and hydraullcking In 1915 by Yukon 

Gold Co 550 

Dredging, Australia — Resoillng •529, 'UK 

Dredging. British Guiana 725 

Dredging. Calif., In 1915 100, 107, 199,550 

— Correction as to output 248 

Dredging, Colombia 102, 119, 456, 668, 879, 

1094 

— Pato report 815 

Dredging gold in 1915 100 

— Correction as to output 248 

Dredging In Mozambique *673 

Dredging, Philippines 100, 101,102 

Dredging, Russian Empire 125 

Dredging, Stralt.s of Magellan 403 

Drier plant, Inlcrnatl. smeltery '423 

Drifting, Rock. Morris-Lloyd mine •354 

— ITnderground loader savings 184 

—Ventilating long drift 222 

Drifting with jackhamers, Prince Con 903 

Drill. Air. repair costs. Conlagas 817 

Drill and tool-sharpening sliop. Cop. Queen.. •lOOO 
Drill. Calyx core, on exploration work. Bra- 
zil ^1037 

Drill, Chum, prospecting. Morenci, Ariz 'BOO 

Drill, Diamond, cores. Rilling of 902 

Drill-dust allaying. Rand mines •lOOS 

— History of minors' plilhlals 936 

Drill forges ^729, ^818 

Drill, Hammer, mounting — Tonnesen's patent. 

South Af ^437 

Drill. Hammer, rotating device •Sie 

Drill, Hand, Inspection gage ^939 

Drill holes. Copper, Interpretation of assay 

curves for •726 

Drill holes. Horizontal — Alaska Gold Belt 

and Longyear records 961. insi 

Drill, Kellow rock •729 



January 1 to June 30, 1916 



THE ENGINEERING & MINING JOURNAL 



Page 

Drill, Levner vs. piston 360 

Drill, Machine, repairing. Stand for *Wi 

Drill, New Konomax *564 

Drill, Self-rotating hammer — Chicago I'neu. 

Tool Co.'s "Hummer" •5G5 

Drill sharpener, Chinese operating Leyner *1036 

Drill sharpener. Original Word 'IBS 

Drill steel brealiage. Preventing, by Carter 

Mg. Co 14 

Drill steel, Carr bits for *\Z 

Drill steel collaring machine, Tonopah-Bel- 

mont *984 

Drill steel. Preheating, In Leyner oll-bumlng 

furnace •1035 

Drill steel. Tempering 744 

Drilling, Churn, costs, Cop. Queen, Sacra- 
mento Hill 226 

Drilling diagram for Catskill Aqueduct by- 
pass tunnel and shaft »261 

Drilling diagram, IVIorris-Lloyd mine 'SSS 

Drilling in Woodbury shaft; header for mul- 
tiple hand-hammer drills •521 

Drilling methods in driving 0-ft. sewage tun- 
nel, Portchester, N. Y •523 

Drilling on Rand — Photos •825 

Drilling — Shaft sinlsing, Ont •774 

Drills, Auger, Forming tools for, Morris- 
Lloyd mine •SS? 

Drills, Car for. Cop. Queen •1102 

Drills, Jackhamer, Alaska-Juneau '982 

Drills, Jackhamer and single-stacker — Contest 

at West Point, Calif 1112 

Drills— .lackhamer drifting. Prince Con 903 

Drill, Jackhamer, loosening boulders 1073 

Drills, Jackhamer, Mounted ; outfit and meth- 
ods for prospects ♦1026 

Drills^ackliamers at Pozo mine 775 

Drills — Jackhamers in shaft sinking on Go- 
gebic 816 

Drills. Operating hammer, from suspended 

ladders. Bullwhacker mine, Mont *fi56 

Drop-shaft sinking, Ouyuna ; •404 

Dropping ore through 1,135-ft. raise '282 

Drumlummon mine, Mont 919 

Dryden, Ont., Gold near 121, 1004, 1048, 1136 

Drying. See "Drier." 

Du Pont, T. Coleman 873 

Du Pont Powder Co 154, 708, 836, 1085 

— Proposed nitric-acid plant...., 655 

— Nonfreezing explosive — "Arctic" 776 

— Conservation of paper 955 

— "Du Pont Products" tUlS 

Dulieux, E 1046 

Duluth-Brainerd. Minn 372 

Duluth & I. B. R. R 76, 280, 876, 999 

Duluth, Missabe & Nor. report 999 

Dumont custom mill, Colo 76 

Dump — Automatic car return ^1112 

Dump car, Self-propelled, Orenstein-Arthur 

Knppel *1035 

Dump, Side, car tipple •182 

Dumping waste cars •llll 

Duncan, Lindsey 1088 

Duncan Syndicate, Ont 964 

Dundee- Arizona 752, 1133 

Dunkle, W. E 1001 

Dunn, Harrison A 1089 

Dunstan, W. Hammer-drill rotating device.. 'BIS 

Duquesne mill, near Joplin 1004 

Duquesne M. & B., Ariz 75 

Duquesne Reduction Co 389, 'Sgo 

Durand, W. L. Expansion bends •IBl, (cor- 
rection) 572 

Durban Roodepoort Deep 124 

Durham. E. B 1088 

— Filing technical literature 784 

Durham Ranch Cop., Ariz 921 

Durrell, V., Iron Mg. Co 1050 

Dust. See also "Coal dust." 

Dust allaying in Rand mines 'loes 

— History of miners' phthisis 936 

Dust-collecting chamber. Wedge *646 

Dust — Collecting powdery material 357 

Dust loss. Cop. Cliff, Determining *505 

Dust losses. Cop. Queen, Measuring *1061 

Dutcli Guiana. See "Guianas." 

Dutch East Indies — Banka tin 67,965 

Dutch East Indies gold mine 799 

Dutch-Sweenv-App, Calif. 75, 107. 202, 242, 

666, 919, 1093, 1134 
Duty. See "Tariff," etc. 

Dwight. A. S.. on furnace charging 886 

— Columbia's new professor, R. M. Raymond 148 

Dwight-Lloyd annular sinterer ^526 

Dwight Mfg. Co.'s furnace-efBciency case..*1075 

Dyer. Jos. B., Death of 157 

Dynamite. See "Blasting," "Explosive," "Du 
Pont." 



Eagle & Blue Bell (see also "Bingham 

Mines") 114, 624, 712, 876, 879, 946, 964 

Eagle mine. Colo 750 

Eaglc-Picher Lead Co 920 

Eagle River Mg. Co 136 

Earl. T. C. Dredging In Straits of Magel- 
lan 403 

Earth tremors, Transvaal 122 

— Their cause 995 

Earthquake danger, Panama 529. 995 

East Butte Mg. Co. 29, 51, 52, 110, 199. 415, 

455, 623, 711, 963, 1007, 1051, 1135 

East Butte Extension 499, S78, 1135 

East Carbonate Hill section, Colo 539 

East Helena smeltery (see also "American 
Smg. & Ref. Co.") — Improvements 1114 



Page 

East, John Hershel, Jr 494 

East Rand .Mining Estates 1124 

East Rand Proprietary 809 

East Side Mg. Co., Mont 878 

Eastern Mesabi Range 372 

Easy Bird, Calif 454 

Eccles, S. W. A. S. & R. mines, Mex 58 

Echo Gold, S. D 77, 964 

Eckel, E. E. Iron Ores t534 

Eckman, J. W., Death of lUOl 

Economic geology in 1915 102 

Ecuador, Mining in — Pan-Ara. paper 343 

Eddy, L. H. Natomas dredge No. 4 with two 

stackers •IBO 

— Jigs on No. 7 *Vil 

Eder, Phanor J 23T 

Edgar Thompson works blast-furnace tapping 

by electricity 003, 698, 951 

Edgar Zinc Co. See "U. S. Steel." 

Ertmaier Mg. Co., Ariz 581 

Education of mining men 532, 784 

Efes, S. Present conditions in Mex 266 

ElBciency, Business 784 

Eggers, H. Tool board 'ISS 

Eighty-Five Mg. Co 112,540 

El Cobre. See "Cuba Cop. Co." 

El Monte M. & M. Co 1093 

El Oro dist., Mex 209 

— Sampling and mapping 551 

— Galena in ores 819 

—Note 117 

El Paso Con 242, 53", 664, 753 

— Annual meeting 580 

El Tigre. See "Tigre." 

Elder, R. B. Pulp sampler •524 

Eldorado mine. Rhodesia 137 

Electric blasting. See "Blasting." 

Electric charges on colloids 577, 9iJ0 

Electric furnace production of ferrosilicon. 

Can 585 

Electric hot plate. Home-made *1076 

Electric induction motor for heavy duty. West- 

Ingliouse •1034 

Electric iron smelting — Notes; 329,687 

Electric Point Mg. Co 1136 

Electric iron .smelting, Trollhattan 23 

— Zinc smelting 998 

Electric ohmmeter. Roller- Smith •1035 

Electric plant cost per kw. 227, (correction) 394 

Electric Steel Co 158 

Electric steel furnace statistics 329 

Electric thaw point. Quain 776 

Electric tin smelting 487 

Electric trolley-wire box. Safety ^857 

Electric welding for repairs 744, 906 

Electrical smoke precipitation. Recent progress 

in ^385 

Electricity, Blast-furnace tapping by, Edgar 

Thompson works, etc 603, 698, 951 

Electricity or compressed air in slope haul- 
ages 221 

Electro-hydraulic shovel, Penn Iron Mg. 

Co.'s •seo 

Electro Metals, Ltd 585 

Electro-osmosis theory, Schwerin's 766 

Electro Zinc Co 426 

Electrolysis, Zinc, C. M. Hall's 263 

EIectrol.vte, Commercial, for iron production.. 943 

Electrolytic antimony 283 

Electrolytic copper precipitation 55 

Electrolytic cop. refineries •50, 51 

Electrolytic cop. refining, Chrome 92 

Electrolytic copper refining. Multiple vs. 

series 9 

Electrolytic generators, Operation of engine- 
driven, Raritan Cop. Wks 730 

Electrolytic plant, Chuquicamata •321 

Electrolytic Sm. & Ref. Co 530, 1121 

Electrolytic silver refining. Effects of addition 

agents in 1075 

Electrolytic tin refining by Whitehead's metli- 

od 357 

Electrolytic tin refining, Perth Amboy 929 

Electrolytic zinc. Paper on 425 

Electrol.ytic zinc enterprises 22. 25 

— Reviews and notes 94, 270, 361, 1048. 1132 

Blcctrothermic zinc smelting 998, 1080 

Elevators, Treatise on fOl" 

Elizabeth Mines, Calif 619, 621 

Elk Gold. Mont 372 

Elko Prince, Nev 77, <I6. 280 

Elkton Con., Colo 160, 664. 795, 922, 1134 

— Report 694 

Ellamar Dist., Alaska, report 1360 

Elliott, S. R 494, 579 

Elm Orlu. Mont 110 

— Butto-Superior litigation 11, 242, 919, 1051 

• — Decision, with map •274 

— Nordlierg-G. E. hoist ;5i> 

Elmendorf. W. J. Cost of crosscut adit 9S7 

Emiiudo Tungsten Mg. Co 879 

Emerald mine. B. C 269 

Emma Cop., Utah 500, 624 

Empire Cop. Co., Ida 179 

Empire, Shoshone Co., Ida. — Horst-Powell 

mine 178, 280 

Empire Mg. Co., Kan 70. 753 

Empire, Nev. Co.. Calif 76. 877. 1050 

Empire Steel & Iron Co 71, 164. 337. 418 

Empire Zinc Co. 32, 77, 112. 114. 180. 333. 

538. 70S. 833. 1052 
Enell, H. Volumetric determination of cad- 
mium and zinc 1075 

Engelhardt. V. Elcc. zinc 427 

Engels Cop.. Calif 75. 201. 79" 

Engine-driven generators. Opei'atlon of, Rari- 
tan Cop. Wks.; Nordberg engines "30 



Page 
Engineer — Age and experience vs. youth and 

education 1081 

Engineer, American, abroad 953 

— Americanizing Brit, mines 870 

Engineer in the tropics 938, 940 

Engineer, The mining 402 

— Opportunities for unemployed '360 

"Engineering and Mining Journal" — 50th an- 
niversary 614 

Engineering, Civil, Types and Devices t366 

Engineering GeoIog>' t366 

Engineering research, Columbia L'niv 254 

Engineers' Army and Nary relations. See 

"War topics." 
England. See "United Kingdom." 

Enricht. Louis — Motor fuel 792 

Equador mining in 1915 118, 119 

Erosive effect of water •572 

Esperanza, El Oro, Mex 209, 210, 923 

—Sampling and mapping 551 

— Galena in ores 819 

Estabrook, Edward L 1130 

Estes, Frank M 918 

Estmere, C. Mining-law revision 568, 573 

Eureka Cy. Mg. Co 1091 

Eureka King, Utah 964 

Eureka, Nov., Story from 155 

Eureka Slate, Calif 162 

Eustis, F. A. Chloridizing and leaching plant 

of Ariz. Smg. Co •803 

Eustis mine. Que 597 

Evaporating dishes. Platinum vs. gold '"SO 

Everson. Carrie •129, 131 

Examination, Metal miners', Knoxville 13, 230 

Excavation costs. Dragline 940 

Excavation — Roller dog for draglines '222 

Excavator, Lubecker, on Klondike •1057 

Expansion-bend chart. Pipe ^184, (correction) 572 

Experience vs. education 1081 

Explosibillty of acetylene 10 

Explosion, Gas, Cuban mine 215 

Explosive. See also "Blastinn," "Du Pont," 
"Nitrate." 

Explosive, New— Bellite No. 1 690 

Explosive, New Du Pont nonfreezing — "Are- 
tic" 770 

Explosives and paper famine 955 

E.xplosives in mines. Storing and handling... 349 

Explosives-magazine shoes, Rubber-soled 355 

Explosives — Neutralizer for d.vnamite gases... 601 

Explosives, Nonfreezing, possible 222 

Explosives — Powder-mill Are escapes 1129 

Explosives, Shipping, to Mexico 468 

Explosives thawing kettle •222 

Explosives, Wood flour in 827 

Export. See also "United States" and other 
countries, metals, etc. 

Export taxes, Mexico 751. 1059 

Export taxes. South Am 174, 363 

Extralateral rights and patents 974 

F 

Fairbanks dist. output estimate 961 

Fairview, Ariz 710 

Falcon mines, Rhodesia 136, 137 

Falding. F. .1.. Death of 330 

Fanti Con.. West Af 1052 

Far Eastern Rand, Will Am. Capital be at- 
tracted to? 1124 

Parish. George E 874 

Farup's ilmenite treatment 357 

Fay, .4. H. Accidents 571. •633, 641. 659 

— Body chart for accidents •1030 

Fay. Charles L 874 

Federal Lead Co 60. 622 

Federal Mg. & Smg. Co 76, 412, 497. 871 

— Photo, of Standard mine •507 

Feed. Acid — Constant-flow device •1029 

Feeder. Tube-mill, Anaconda •480 

Feeders, Flotation reagent, .Anaconda *469 

Feeding, Jlechanical. applied to silver-lead 

lilast furnaces — U. S. Smg. Co.'s, etc 'SSS 

Feldspar mining, N. C 412 

Fell. Charles 874 

Fell, E. N.. Stories by 702 

Ferberlte — New Colo, town 878 

Ferreira Deep. Transv.aal 122, 809, 996 

Ferro mine. Minn. 163, 622. 711, 836, 1006, 1093 
Ferromanganese, See "Manganese." 

Ferrosilicon. Canada 585 

Ferry. Calilo. Gila river 'isg 

Fertilizer, Peat-phosphate. Ida.. Minn 528 

Fertilizing chemicals, imports, exports 543 

Fichtel. C. L. C. Lake Sup. cop. dist 140 

Field Analysis of Minerals t917 

Field fortincations, sieges and demolitions 

•514. 532 

Field M. & M. Co 66, 78 

Field's Process Smelter Fumes 76 

Fiftieth anniversary, Our 614 

Filing technical literature 784 

Filling blocks for Idler wheels ^901 

Filling stopes with sand 266 

Filler drums. Rewinding 'SIS 

Kilter practice. Australia .- 263 

Filters. Oliver, dewatering flotation concentra- 
tion concentrates ^469, 475 

Filters. Tougehning paper 781 

Filtration aid. Paper-pulp 781 

"Financial News," London, opinions 870,955 

Finlav. J. R •527, 918 

Fire barriers. Broken Hill 984 

Fire-doors. Old. made usable •261, •560 

Fire escapes in powder mill 1129 

Fire. Penn. mine. Butte 362. 452. 49«, 536. 

5S0. 619. 754. 1051 



THE ENGINEERING & MINING JOURNAL 



Volume 101 



Page 

Fire protection, Van-Roi mill 6«-2 

First aid and rescue, Calif 176, 1130, llil 

First-aid contest rule changes bSb 

First aid. Gas-poisoning 901 

First aid — Treating wounds --a 

First National. Calif. See "Balaklala. 

Fish poisoning by cyanide ^J 

Flat-contract abolition, Transvaal l^J 

Fleshpots, Speaking of »['^ 

Float control for pump ,• ■ • ;.i.', ' ■ 

Flocculation and sedimentation (see also ilo- 

tatiou") »429. 509, '681, •763 '890, 990 

Florence, Goldfleld. Nev o82, 92^ 964 

Florence M. & M. Co.. Utah 82, llib 

Florence Silver. B. C ;9» 

Flotation aiding conservation •■• -»| 

Flotation, Anaconda V.Va '. .oi 

—Tests and plant described '469. 'ixv 

—Oils •, 2"° 

—Testing blankets for Callow cells ob- 

Flotation. Bearing of. on zinc metallurgy iu^ 

Flotation, Bibliography of '• =1; 

Flotation. Braden Cop. Co ,;v ' -eni' ci- 

— Nodulizing concentrates 441. bUJ, b4i 

Flotation, Broken HiU— Hebbard-Harvey ma- 
chine at Sulphide Corp.'s Central mme ^^^ 



Flotation— Colloids 249, 272, »429, 509, *6S1. _ 
♦763. *890, 990. 1068, 1105 

Flotation concentrate smelting pat *479 

Flotation concentrates. International smeltery 

for. Miami *421. *oe3 

Flotation concentrates. Sintering, Mt. Mor- 

gan *^5n; 

Flotation concentrates — Production 4»2 

Flotation, Cuba Cop. Co 55, 397. *d92 

Flotation, Differential — Magnetic separation.. djI 

Flotation dissertaUou at smoker 382 

Flotation Hydrocarbons for — Mineral Sep. 

Ltd.'s Nutter patent 636 

Flotation, Interfacial tension in 5.6 

Flotation machine, Hebbard-Harvey 231 

Flotation machine. Rowand's '597 

Flotation machine. Roy & Titcomb's experi- 
mental *691 

Flotation machine. Wood 1 ' o 

Flotation — Minerals Sep. report 641 

Flotation process. The 364 

Flotation Process. The 1 703 

Flotation progress in 1915 9i 

— tJ. S. map, showing companies '98 

— Copper flotation 54. 91,106 

— rtah companies 114 

Flotation, New ideas about — Higgins frother: 
Layers separation of mixed sulphide ores : 
Higgins & Stenning machine ; Owens frother 

and separation of sulphides '22 

Flotation. Pine oil for 21 

Flotation plans. Cobalt. Ont 876 

Flotation replaces cyanide. Oneida Stag *142 

Flotation. The advance of 998 

Flotation works. How •851, 870, (erratum) 

912, 99S 
Flow computer and slide rule, Proudfoot... 565 

Flow device. Constant •1029 

Flow meter. Pipe. Bailey ^1034 

Flue-dust chamber. Wedge *646 

Flue-dust collection 357 

Flue-dust losses. Cop. Cliff. Determining. . .*505 
Flue-dust losses. Cop. Queen. Measuring. .*1061 

Flue-gas analysis case. Dwight •lO'S 

Fluxes. Assay. Lime in 568 

Flvnn. F. H. Walhalla dist •379 

Food list. Tropical 940 

Foote. F. W. Jigback for Incline ^221 

Forbestown Consol 30 

Ford, Henry, and motor fuel 792 

Ford. W. E. Dana's System of Mineralogy. . .t705 
Foreign trade. See also "United States" and 
other countries, metals, etc. 

Foreign trade. Increa.se in 1044 

Forest reserve. Prospecting on 612 

Forge. Case low-pressure oil. Denver Fire 

Clay Co.'s ^818 

Forge, Ajax oil or gas *"29 

Forges. Oil, Cop. Queen •1099 

Formcn Trading Co 1009 

Forming tools for auger drills 'Sa" 

Formosa mineral resources 1060 

Forrester. 0. E 276 

Fort Smith Spelter Co 796. 838 

Fortifications, Field, sieges and demolitions 

•514, 532 

Fortuna mine, Ariz 1092 

Fortuna mine. Utah 1094 

Fortune niiric. LeadvlUe, Colo 664 

Fortune Mg . Ariz 75 

Foster mine. Ont 500 

Foster. R. S 494 

— Accidents and prevention. Anaconda •593 

Foster's. Dr.. bill 401 

Foundallon-bolt casings •561 

Fowler. F. Brit. Guiana report 723 

France copper — Havre market 1010 

France gold 4S 

France Imports and exports 810. 1010 

France Iron 907 

France zinc-ore export allowed 996 

Francis. Howard L 1080 

Franklin. Mich 200, 6«", 753. 798, 963. 1134 

— Report 889 

Frasch sulphur-mlnlng patent 439 

Frederick, L., and "dollar exchange" 531 

Free. E. E.. et al. ColloULi In ore dress- 
ing 249, 272. ^429, 500, •081. •763, "890. 900 



— Properties of slime cakes 1068, 1105 

Freed estate coal lands 580 

Freeland Dev. & Tunnel Co., Colo 106 

Freeland mine, Colo 752 

Freeport Chemical Wks 923 

Freeport Sulphur Co 53, 923 

Freight case. Copper, Tacoma .'ll37 

Freight congestion and embargos. Railway 701, 

"39, '747, 1028 

^The reasons 1043 

Freight situation. Ocean .26, 32P 

Fremont Grant, Calif 159 

French. See 'Trance," "Guianas." 

French, A. G., slimes treatment 992 

French Flag, Ida .■ 878 

French Gulch Dredging Co 101, 239. 666. 105n 

French Indo-Chinese mines 994 

Freundllch's slimes treatment 992 

Frisco Gold Mines, Ariz .498.538 

Frontino & Bolivia G. M. Co 119.263 

Frother patents. Flotation '22 

Fryer Bill drainage. Leadville 497 

Fuel gas. Analysis of '779 

Fuels. Heat values of 1031 

^ller, .1. C 1001 

Fuller's earth discovery, N. M 1052 

Fulton, Chester A 663 

Fulton, John. Death of 237 

Fume. Smeltery. See "Smeltery." 

Furlough Devel.. Ariz ." 962 

Furnace. See also "Smelterj-," "Roasting." 

"Converter," "Electric." 

Furnace. Blast. Gases. Cleaning of t534 

Furnace. Blast, record. Zenith •722 

Furnace. Blast, settlers. Chrome-ore tapping 

blocks for 778 

Furnace, Blast, tapping by electricity, Edgar 

Thompson works 603 

— Teziutlan Cop. Co 698 

— From "Greenwood Times." B. C 951 

Furnace. Boiler, door support ♦261, ^560 

Furnace-efiBciency case .-•1075 

Furnace gases. Measuring dust losses in — 

Can. Cop. Co •505 

— Copper Queen •lOfil 

Furnace-grate bars, Sandoval •602 

Furnace insulation (i46 

Furnace, Leyner oil-burning. Preheating steel 

in •lO.IS 

Furnace, Remelting, Anaconda •400 

Furnace, Reverberatory wire-bar, Cbuquica- 

mata ♦ssg 

Furnace. Square-pit crucible ♦976 

Furnace. Wedge, for blende roasting 718 

Furnaces. Antimony. China ^639. ♦640 

Furnaces. Blast, Mechanical feeding of silver- 
lead — U. S. Smg. Co.'s, etc ♦SSS 

Furnaces, Blende-roasting 1021 

Furnaces, International smelterj- ^421 

— Concentrate and calcine cars. ^563 

Furnaces. Oil — Drill forges ^729. ^818. •1099 

Furnaces. Reverberatory, Chrome-iron ore as 

lining for 267 

Furnaces, Reverberatory, Coal-dust firing in ^302 
Furnaces, Reverberatory, Seasoning, Con. 

Ariz ^721 

Furnaces, Tin, Perth Amboy ! ! ! ! •oEs 

Fuses, Proper way to spit ^260 



G. S. Drill- and tool-sharpening shop. 

Cop. Queen ^1099 

Gage. Hand-drill inspection 9.39 

Gage, Jlercury pressure •goi 

Gaika mine, Rhodesia 137 

Galena Farm mine *>70 

Galena Hill dist., Calif .' . 877 

Galena in gold and silver ores. EI Oro 819 

Gallagher's. J. F.. contracting plan and co- 
operative smeltery 709, 876 

Gallagher property, Colo 795 

Gallagher. William H 276 

Gallatin Gold Dr. Co 6''-> 

Galllgan. E. F. .lackhamers at Pozo mine.! 775 

Gallium from spelter 197, 720.937 

Gallium produced In U. S 197 

Galty Boy. Colo '.', .-Ji 

Galvanlzers as zinc smelters 1082 

Galvanizing processes 1070 

Garcia. J. A. Wash house ..." 477 

Gardolla dredge. Calif 76. 100. 877 

Gardner-Rlx air compressor •10'>6 

Garfield Chem. & Mfg. Co 497 

Garfield Smelting Co 52, 92. 114. 138 

— Elec, smoke precipitation '♦.388 

Garlock-Goler dist.. Calif 1134 

Gas cleaning. Cottrell process 391 

Gas-engine water cooling In cyanide plant.. •SfiO 
Gas, Flue, analysis case, Dwight... . •107'; 

Gas, Fuel, Analysis of !.^770 

Gas machine. Tirrlll equalizing '.' »a(H 

Gas, Natural, Alberta — Prohibiting exporta- 
tion 920 

Gas. Natural. Canada 122. 475,483 

GAs, Natural. Okla.. conservation 537 

Gas neutrallzer. Dynamite 1)01 

Gas-pnlsonlng flrst aid oni 

Gas. Rock, at Cripple Creek 888 

Gas-veloclty measurement In dust-loss deter- 
mination. Cop. CIltT ♦SOS 

Gas-nell casing. Welded 939 

Gases. Cleaning of Blast-Furnace. . . ' t534 

Gases. Heat values of 1031 

Gases. Measuring dust losses In ♦SOS, ♦lOOl 

Gasoline, distillate, etc.. Comparative cost of 1115 
Gasoline engine, Clay ♦102S 



Page 

Gasoline from shale 530 

Gasohne, High price of 782, 1085. 1129 

— Cheaper predicted 1122 

Gasoline locomotives. Air vitiation by 645 

Gasoline Mfr. from Petroleum t917 

Gasoline — Rittman process in Calif 1047 

Gasoline production. U. S 404 

Gate, Folding safety, for cages •1111 

Gate mechanism. Ore-bin ^521 

Gate, Semiautomatic shaft safety !!!!!^393 

Gatico Co., Chile 118, 259 

Gay, J. E.. Estate of 830 

Geary, W. P. Australasia in 1915 126 

Gebb, J. Wesley 220 

Geddes, Charles ' 918 

Geduld Prop 123, 809, 1124!' 1125 

Geis, W. H 794 

Gem Jig. Co., Mo ".I]]]]'.'.'.'.'.'.'.'.' 453 

General Chem. Co. — Sulphuric acid mfr 209 

— ^Tote 163 

General Exploration Co 139 624 

General Petroleum Co 411 

Geological ofHcials, State 104 

Geological Survey. See "Survey." 

Geologj- — Analysis of slate and dike 433, 

(erratum) 592 

Geology — Black Hills gold-bearing iron-quartz- 

tremollte belt ^770 

Geology, Cerbat and Black Mtns., Ariz..!!!!! 11 

Geology, Chuquicamata ♦307 

Geology, Coeur d'Alene 178 

Geologj-, Cuban mining ! ! !^587 

Geology, Economic, in 1915 102 

Geolog.v, Engineering M66 

Geology, Gold Lake dist ♦sag 

Geology — Idiosyncrasies of paystreak, Yukon *889 

Geology, Oatman dist.. Ariz •!, ♦sgs 

— "Conversational geology" 1119 

Geolog.v, Peruvian districts •845. 'lOlS 

Geology — Samples and their interpretation .. •gsS 
Geology — Secondan* enricliment of copper 

ores 1127 

Geology, Sudbury nickel-cop. dist. ...!!!!!!! •Sll 

Geology, Textbook of t366 

Geology, Walhalla dist., S. C ^379 

George, H. C 1130 

Georgetown, Colo., activity 1047 

German zinc-ore contract in Brit, court 

„ etc 148, 1095, 1104. 1120 

Germanium from spelter 720 

Germany coal and coke !!!!! 543 

Germany copper ! * ! " 4g 

Germany iron and steel 376, 503, 671! 997, 1139 

Germany, Manganese supply of 957 

Gerry, M. H., Jr., East Helena smeltery. . .!lll4 

Getting out the ore 365 

Giant mine, Rhodesia 137 

Gibson, Thomas 237 

Gibson, Thos. W. Ont. in 1915 ' 121 

Gideon & Quirk, Alaska loos 

Gilbert. J. C 535 

Gill. P. L. Multiple vs. series electrolytic 

copper refining 9 

Gillies Limit opening 920! 1052 

Gilman cut-and-fill system ♦esi 

Glass. Barium-aluminum 254 

Gleeson. John, case decision 498 

Globe Con., Calif g75 

Globe & Phoenix 136 

Goetze, Frederick A .' 254 

Gogebic, Shaft-sinking rate on 816 

Golconda Con., Ariz 30, 536 

Golconda mine, Ariz. ; Union Basin Mg. Co 

6, 75, 621, 1049 

Golconda Extension, Ariz 30, 162 

Gold, Adirondack, scheme 449 

Gold, Alaska 43. 115.134 

Gold and silver metallurgj- — Review 94 

Gold and silver ores. Galena in. El Oro 819 

Gold, Australasia 43, 127, 137, 348. 714, 

827, 1000 

— Export probibltiou removed 756 

Gold Bank. See "CaUf. Gold Mines." 

"Gold Bar. The" 932 

Gold, Bolivia — 14-lb. nugget 1007 

Gold. Brazil, mining ♦759 

Gold. Brit. Col 236, 268,483 

Gold, British Guiana 725 

Gold Bullion mines, Ariz 332 

Gold bullion. Segregation In in:;: 

Gold. Calif 43. V.' • 

— Discovery site and monument ♦lit::' 

Gold, Canada 43, 4s 

— Assay office statistics 2s 

— Pre-Cambrlan fields of central Can 27 

Gold Chain, Utah 879, 9' 1 

Gold. Chile, mining n 1 

Gold Cliff. Calif., strike li:; : 

Gold. Commercial movement 45. 2"') 

Gold dishes. Platinum vs ♦7.-iii 

Gold dissolution in cyanide 3.'.r, 

Gold dredging. Sec also "Dredge." 

Gold dredging In 1915 in 

— Correction as to output :; 1 

Gold, Ecuador :; 1 1 

Gold Hill Mg., Colo :.; 

Gold HIU. Utah 41,: 

Gold. India 43, i:!7 

Gold. .lapan 43! 1:1:; 

Gold King. Colo 76. 3.i 1 

Gold Lake dist., Man ♦3:1:1 

Gold. Madagascar 4:; 

Gold. Mexico 4:; 

Gold. N. Y. Assay office sales 4i 

Gold. Ontario 475, 483, 6SI'. 

Gold ore. High-grade, National, Nev 111:; 

Gold Orn Mg. Co 1 (i |<i 



January 1 to June 30, 1916 



THE ENGINEERING & MINING JOURNAL 



Page 

Gold Pan mine, Man 1091 

Gold, Peru •846, 847 

Gold, Philippines 43. Wl 

Gold Pinnacle, Colo 280 

Gold recoven". New process of, wanted 951 

Gold- refining process, WohlwUl '"'S 

Gold, Rhodesia 43, 136, 375 

Gold Koad mine, Ariz. n. 5, '895, 1005, 1064, 1119 
Gold Road-Tom Reed dist. (see also "Oat- 
man," etc.) •! 

— Map of claims '4 

Gold, Russia 43, 125 

Gold. Russian, placer mining 363 

Gold. So. Car. — Wallialia dist •379 

Gold. South Dak 43 

— Black Hills gold-bearing iron-qua rtz-trem- 

olite belt '770 

Gold. Straits of Magellan, dredging 403 

Gold. Transvaal 43, 122, 166 

—Mining in 1915 122, 'SOg 

Gold, U. S 41 

— By stales 43 

— Mint coinage 42 

— Amount held. Jan. 1 205 

—Ore. 1911-1914 128 

Gold, rtah 43, 115, 140 

Gold. West Africa 43.375 

Gold, World 41 

— B.r countries 43 

— For 20 vears 43 

Gold. Yukon Gold Co., output 550 

Golden Chest. Ida 163. 240,622 

Golden Cycle. Colo. See "Tlndicator." 

Crf>lden Gate Mg. Co 77 

Golden Jubilee. Calif. 454, 666 

Golden Pen. Xev 203 

Golden Reward. S. D 113, 436 

Golden Rule mine, Ariz 1049 

Goldfleld Con. 99. 163. 202. 373, 500, 540, 623, 

667. 712, 754, 836, 922, 1051. 1093 

Goldfleld Great Bend 77 

Goldfleld — Small timber headframes •645 

Goldschmidi Detinning Co 186 

(^oldschmidt & Lyman. Inc 663 

Goldstone. Calif., New strike •1040 

Goldstrike dist.. Wash 923 

Gong. Automatic locomotive •lOSl 

Good Hope Mg. Co 77 

Goodrich. N. P. Mercury pressure gage •SOI 

Goodsprings Anchor. Xev 77 

Goodsprings dist.. Nev Ill 

"Goodye.irite" asbestos packing 1034 

Gordon-Tiger mine tragedy 411 

Goss. W. F. M 874 

Gould mine. Ariz 1133 

Govt. G. M. Areas (Modderfontein) 123. 809. 

1124. 1125 

Grace. Eugene G 450 

Grafr, W. W 579 

Graham. A. 1 918 

Graham. Frank. Death 

Graham & Co.. Mo 878 

Granby Con.. B. C. 52, 236, 26S. 269. 270. 

712. 837. 921. 1052. 1133 

— Ten-ton dump car •354 

Granby Mg. & Smg. Co.. Joplin dist. 62, 609. 

S78. 920 

— Xew concentrator •557 

— Purchased by Am. Zinc 1042 

Grand Central slimes treatment 993 

Grand Reef. Ariz 454 

Grand View. Colo 242 

Granite Creek, Ariz., molybdenite 30 

Granite Gold. Alaska 75. 1003 

Grano's barium-chloride process 356 

Grant Power Co. — Eroded nozzle ^572 

Graphite. Canada 483. 806 

Graphite. Cevlon. exports 72 

Grass Vallev Con., Calif. 797. 1005 

Grasselli Chem. Co 62. 93. 609. 838 

Grate bars at Sandoval ^602 

Gravity Incline with limited cable '559 

Gray Eagle Reduction, Ariz 75 

Gray's tungsten strike, Ariz 964 

Cravstone. Ariz 538 

Great Boulder 127 

Great Boulder Perseverance 440 

Great Brit. .«ee 'Tnited Kingdom." 
Great Butte Cop. Co. (see also 'TButte & 

Bacom") 708. 798 

Great Cobar. AusIraUa 127, 346. 347 

Great Lakes Transit Co 419 

Great Northern Iron Ore Properties 753. 836. 

963. 1091 
Great Western Con., Tonopah. Nev... 203. 540. 964 
Great Western. Horn Silver. Nev. See "South- 
western Mines." 

Great Western Mines. Utah 837 

Great Western (zinc) 66. 78 

Greater Miami Cop. Co 962 

Greek Strike. Ont.. Papassimakes' 121. 243. 1045 

Green & Faeersren, rtah 1094 

Green Hill-Cleveland Co.: Olympia mine 16.1 

— Photo, of surface plant •696 

Green >fonster. Nev 32. 1051 

Green. Samuel. Death of 330 

Greene-Cananea (see also "Cananea Con."j 

74. 117. 164. 734. 1123. 1131 
Greenwater Cop. Mines (see also "Gt. West- 
em Con.") 203. 964 

Greenwood. H. D. Platinum vs. gold dishes "780 

Greenwood. Smelting operations 1074 

Grey Stone mine. Calif. 31 

Grillo-Schroeder acid s.vstem 1024 

Grimes, Chas.. Death of 1046 

Grizzly, (Tbain, Rowe mine •599 



Grosve 
try 



W. M. Metallic- magnesium Indus- 



652 
Grunow, W. B. Chum-drill prospecting, Mo- 

renci '969 

Guadalupe quicksilver mine 411, 750 

Guager, A. W. Gas. Cripple Creek 888 

Guatemala In 1915 120 

Guatemala petroleum control 352 

Guck. H. A. Profit sharing 612 

Guess. H. A 535 

Guggenheim Bros 493, 1130 

Guggenheim dredges, Calif. See "Yukon 

Gold Co." 
Guggenheim Exploration Co. and Yukon- 
Alaska Trust 530, 869 

Guiana, British, Mining In 725 

Guianas, mining in 1915 119 

Guildford dredge, Australia •529 

Guiterman, F., Death of 450 

Gulf States Steel Co 797 

—Report 822. 936 

GwilUm, J. C, on education 532 

Gyges. Ont 456 

Gypsiun, S. D 436 



H 



H. E. & Xr. Mg. Co. (see also "\Vestem 

Union") 31, 76, 242 

Haas, William, DeatU of 1089 

Haggin estate. Stocks In 575 

Hager. D., Valuation of oil properties •930 

Halcomb & Davidson, Inc 749 

Hall, Albert E lOSS 

— Mine cost system 688 

— -Three shaft-sinking methods *7T4 

HaU, A. H., Death of 151, *m. 195 

Hall's. C. A., zinc electrolysis 263 

Hall. C. M., Estate of 27 

Hall, E. J. Crushing for assaying. .187, 445. 568 
HaU, Edgar. Chrome-iron ore as lining for 

reverberatory furnaces 267 

Hall's, R. G., electrol.vtic zinc 94 

Hallett. R. L. Fuel-gas analysis..." ^779 

Hamilton, Alice. Lead poisoning 90 

Hamilton automatic sampler ^603 

Hamilton, E. H 28 

Hamilton. E. M. Concentration formulas.... 187 

Hamlet M. & M., Colo 76 

Hamlet mill fire. Colo 242 

Hammell Syndicate. Ont 373 

Hammer, Post. Q M S. sold by Yulcan Co..^565 
Hammond. John Hays — Magnesite land pur- 
chase, Calif 619 

Hammond Mg. Co 78 

Hance, J. H. Segregation in gold bullion.. 1033 
Hancock, Mich. 141, 200, 372, 667, 711, 753, 922 

Hand-jig, Joplin *479 

Hanover Gypsum Co 798 

Handwriting on the wall 1043 

Hand.v, B. S. Failing-rope indicator ^186 

■f inig Hansen, K 276 

°' ^izi Hardenberg mine. Calif 752 

Hardinge mill practice. Anaconda '480 

Hardman, R. C. Tropical rations 940 

Hamer. L. S. Power for agitators 1118 

Harpham, H. H 409 

Harrington. Alaska 135 

Harrington. Daniel 1088 

Harrington strike. Joplin dist 415 

Hartman. mine. Calif 581 

Harvard, Calif 76 

Hase, H. C, Death of 131. 193. 193, 236 

Hasenclever roasting furnace 1022 

Hasson, Edward F 330 

Haulage. See also "Car," "Hoist," "Rope," 

etc. 
Haulage — Gravity incline with limited cable. •o.'"9 

Haulage inclines — McGinty block •H 

Haulage — Jigback for incline ^221 

Haulage-motor coupling hook ^643 

Haulage — Removing broken ore from flat 

stopes : a car •SOo 

Haulages, Compressed air or electricity in 

slope 221 

Hauling rails. Shoe for •lOTl 

Havre, Copper market of inoo 

Hawaiian salt production 394 

Hawke's dredge. Calif ion 

Hayden. Carl 1130 

Hayden. Charles. Trip of 375 

Hayden Development. Ariz, (see also "Cop- 
per Chief") 106. 876 

Hayden. J. E. Rock drifting. Morris-Lloyd 

mine ^354 

— Underground loader savings 1S4 

— -Rock drifting 222 

Hayden. Ont 203. 436 

Ha.vden. Stone & Co. in Bolivia 923 

Hayes. C. W.. Death of 367 

Hazel mine. Tex 623 



Pace 

Hendrie. C. F.. Death of 158 

Hendrie ic BolthofT ore cooler 3»7 

Herculaneum. See "St. Joseph Lead Co." 
Hercules Mg. Co. lOS, 178. 497. 6«0, 711. 

753. 922. 9«3 

Hercules Powder Co 498 

Herman. J. Lime in assay fluxes 568 

Hermann, E. Grate bars, Sandoval "602 

Herrenschmidt antimony furnace '640 

Herrick, R. L 494 

Herty, C. H 1088 

Hess. Bush .M 494 

Hetty Green mine. See "ConsoL Amador." 

Hewitt-Loma Doone 268, K'< 

Hicks. Col. A.. Death of 535 

Hidden Treasure. S. D 9fr( 

Higgins, A. H.. flotation patents *22 

Higgins, Edwin 157, 198, 220, 369, 430, 494, 

1028, 1131 

Higgins Land Co., Mlim 1048 

High-Speed AUoys (Ltd.) 102T 

Highgrading suppression, Colo 537 

Highgrading ttmgsten. . .199, 709, 730, 1039. 1085 

Highland Surprise Con 76, 202 

Highland VaL M. & D. Co 1136 

Hilborn. Ellis 663 

Hildt's zinc-smeltery project 620 

Hill iron mines. See "Great Northern." 

HiU, John A., Death of '233 

HiU, M. Alan 918 

Hill Pub. Co. — New president •327 

Hill Top mine. Ariz 752 

Hillcrest iron mine. Stripping with sand 

pump •211. 215. 369 

Hillebrand, W. F. Gallium from spelter. .197, 720 
Hirsch loses appeal against Zinc Corp.. etc. 

148. 1093 
Hirschberg. C. A. Catskill Aqueduct tunnel 

bypass ^260 

Hirst mine. Alaska 136 

Hitchcock, C. K. Joplin band- jig ^479 

Hixon, H. W. Blast-furnace tapping by elec- 
tricity 698 

— Electrothermic zinc smelting 1080 

Hobart, F. (^Id and silver 43 

— Iron and steel 69 

Hoffmann, Karl F 450. 1124 

Hoffmann. W. F.. scholarship 869 

Hofman. H. 0. Lead metallurgy 89 

Hoist. Drill-column air, for windlass ^1025 

Hoist, Electric, Crown Mines •265, 786 

Hoist, Man, at Inspiration •476 

Hoist, Nordberg-G. E., for Elm Orlu Mg. Co. 256 
Holsters' strike. See "Labor. Missouri." 
Hoisting. See also "Rope." "Haulage." 
"Cages," "Shaft," "Chairs." etc. 

Hoisting controller. Lilly. Anaconda ^688 

Hoisting — Filling blocks for idler wheels. .. .•901 

Hoisting-tonnage records 17, 360. 493. 786 

Hoisting-rope lubrication 858 

Hoisting-rope question. The 699 

Hoisting-sheave lining. Litchfield •356 

Hoists, Water, L'se of 857 

Hollinger, Ont. 78, 95, 121, 164. 203, 281, 
433, 436, 486, 483, 500, 582, 624. 796. 799. 

834, 923, 1007, 1136 

— Report 946 

— Report extracts — Tennis ; war 916 

— Consolidation approved ; details 953 

Hollinger, Bennv, Ont 1052 

Hohnan, J. W., Death of 918 

Holmes, J. A.. Safetv Asso 748 

Holmes. T. B.. Escape of ira. 'igo. 195 

Holmes. W. H.. Death of 158 

Holt-Christensen Process Co 960 

Holton. Charles R 663 

Holz. Emil. Death of 276 

Homelode, S. D 7.i4 

Homestake. S. D.— Report S12 

—Notes.. S3. 77, 113, 203, 281, 436, 754. 799. 964 

Homestead. Kan 202 

Honduran mining laws 428. 44S. 769. lllS 

Honduras. Prospector's experience in 1118 

Honduras in 1915 120 

Honolulu Oil Co 239 

Honolulu Salt Co 594 

Hookworm. Calif. 875 

Hoover. H. C S7». 872 

Hope Mg. C:o., Calif 581 

Hopkins. P. E. Kowk.ish (kild Area t917 

Horu Silver. Utah 114. 449, *&M, 991, 992 

— ReiKirt 822 

Horner. A. L., Death of 794 

Horsl-Powcll. See "Empire." 

Horton. F. W 706 

Horton. R. E. Better Kutter's formula co- 

elTicients 675 

Hose. XiT. wire-winding tool •H 

Hose-clamp tool. Chic-igo •941 



Headache. Preventing powder 47S Hoskin. Arthur J 918 



Headframes. Small timber. Goldfleld ^64 

Health in the tropics 938. 940 

Hearth. The Newnam 89 

Heat-conducting and insulating materials. 

Table of 1020 

Heat values of fuels 1031 

Heating buildings. Cost of — Fomiulas 986 

Hebbard-Harvey flotation machine 231 

Hecla mine. Ida 177. 280. 798. 871. 1093 

— Piiolo •567 

Hedley Gold Mg. Co 236. 270 

—Report 904 

Hegeler roasting furnace 1023 

Heidelberg, S D 416 

Helvetia Cop. Co 105 

— Report 482 



Hot plate. Home-made elec •1076 

Hotchkiss. W. O. Mineral Land Classiflca- 

tlon t917 

HoughUling. A., Death of 794 

Houghton Cop. Co 200 

Houston. P 276 

Hovland. Henry B 137 

Howe. H. M. Metallography of Steel and Cast 

Iron t917 

Howe. R. E 157 

Howells. G. A. Institute members on Naval 

Consulting Board 360 

Huanchaca Co.. Bolivia 119, 174. 175 

Hubbard. J. D. Slow cyanide poisoning 698 

Hudson Bay. B. C 624. 879 

Hudson. Claude S 535 



THE ENGINEERING & MINING JOURNAL 



Volume 101 



Page 

Huelva Cop. Co. report 248 

Hughes, John lOi'l 

Hughes, T. L 1=' 

Hull, M. R 663 

HuU-Rust mine, Minn 415, 593, 963, 1060 

Humbert, F. W lOSS 

Humboldt mine, Ouray, Colo., air-compressor 

photo *3»6 

Humboldt Queen. Nev !>36 

Hunker Creek. Yukon, paystreat *S89 

Huntley, E. D., Death of '4S 

Huronian, Ont 1136 

Husk, C. E., Death of 61( 

Hutcbins, J. P. Russia In 1915 124 

Hydraulic-formula coefficients, Kutter 675 

Hydraulic-sluicing plant, Victoria *34i 

Hydraulic stripping Hlllcrest mine..*211, 215, 369 
Hydraulicking in 1915 by Yukon Gold Co... d50 

Hydraulicking. Russian Empire 125 

Hydro-Elec. Smelting Co 624 

Hydrocarbons for flotation • 636 

Hydrogen at high temperatures. Reduction of 

oxides by 1674 

Hypotheek, Ida 372, 415. 455, 963 



Idaho — Coeur d'Alene production for 13 years 145 

Idaho-Continental 76, 178. 963 

Idaho copper 48 

Idaho gold and silver 43 

Idaho lead 56, 177. 436. 1090 

Idaho mine accidents 467 

Idaho mining in 1915 107, 177, 436 

Idaho peat phosphate 528 

Idaho wage-payment law ._._. 1028 

Idaho zinc 177, 608 

Idiosyncrasies of the paystreak *S89 

Iditarod gold shipment 161 

Idler wheels, Filling blocks for '901 

If I Can, Calif 539 

lUingworth & Dunnel robbery 960 

Illinois petroleum SO, 468 

Illinois Steel Co 8, 78 

Illinois, Univ. of 1001 

Illinois zinc 61, 606. 608 

Ilmenite, High-titanium products from 357 

Imperial, Colo 1050, 1093 

Imperial Cop. Co., Ariz 1133 

Imperial, Ore 77 

Imperial, S. D. See "Ofer.'' 

Inca Mg. Co., Peru *847 

Incline, Gravity, with limited cable *559 

Incline, Jigback for constructing *221 

Inclines, McGinty block for *14 

Incomes. Taxable, Joplin dist 830 

Independence, Alaska 538 

Independent Oil Producers Agency 795 

Index, Mining 38, 286, 460, 628, 842, 1012 

Index to Volume 100 272 

Indexing technical literature 784 

India and metric system 830 

India gold 43, 137 

India petroleum 137, 720 

India production in 1914 137 

Indiana Mg. Co. report 821 

—Note 1050 

Indiana petroleum SO, 468 

Indium and gallium from spelter 197, -720, 937 

Indo-Chinese mines 994 

Induction motor for heavy duty. Westing- 
house •1034 

Industrial Preparedness Comm., Mining mem- 
bers of 929 

Industrial stocks. Earnings on 749 

Information, Interchange of 791 

Infusorial earth — Brit, supply 1018 

Ingalls, W. R 918 

— Zinc metallurgy in 1915 92 

—Electrolytic zinc 125 

— Spelter statistics for 1915 606 

IngersoU-Rand Co.'s "Leyner" and "Jack- 
hamer" drills, etc. See "Drill," "Drills," 
"Leyner." 

Ingersoll-Rogler compressors photos '566 

Inglis. W. W 409 

Inland Crystal Salt Co. ; Utah Cheni. Co. 82, 

140, 960 

Inland Steel Co 76 

Innes, M. Calif, qulcksilrer 68 

Insects. Keeping crawling, out of quarters, 

Panama 263 

Inspectors, State mining 104 

Inspectors' conference. Mine 467 

Inspiration Con. 53, 54, 106, 332, •424, 454, 

5:)8. 642, 655, 666, 877, 999, 1092 

—Man hoist '476 

— Mill photos •866 

— Report 703, 742 

— Steam shoveling vs. caving 1128 

Inspiration plant. International Smelting Co.'s. 
See "International." 

Institution of Mg. & Met 769. 872, 932 

Insulating materials. Heat 1020 

Insulation, Furnace 646 

Intcrfaclal tension In flotation 576 

Intemiountaln Cop., Mont 77, 798, 922 

International Engineering Congress 266 

International Nickel Co : 

— Report 1020 

— Nickel refinery planned — Attack on com- 
pany, etc 447 

Notes.. 370, 418, 497, 533, 580, 597. 620, 709 



— Canadian Cop. Co. — Determining dust loss. 

Cop. CUff *505 

Coal-dust firing 303 

Crean Hill and Creighton shaft sinking. .^774 

Metallurgy of ores from Cobalt 646 

Mine cost system 688 

Notes, etc. 52, 78, 121, 122, 528, 626, 665, 1094 

International Petroleum 624 

International Smg. Co. 52, 53, 58, 75, 90, 91, 

92, 139, 140, 281, 871, 887, 1133 
— Elec. smoke precipitation at Inspiration 

plant •389, ^423 

— Smelting at Miami ^421 

Concentrate and calcine cars ^563 

Photo, of works •See 

International Tungsten, Ariz 710 

Interstate-Callahan. See' "Consol." 

Interstate Iron Co 31 

lola mine, N. C 920 

lonides, S. A. Malm process 864 

Iowa mine. Colo 76 

Irelan property, Calif 1134 

Iron, Alabama 166 

Iron and iron-ore supplies 1128 

Iron and steel trade conditions 329 

Iron and Steel Wks. Directory, U. S. and 

Canada tl087 

Iron, Australia, smelting 128 

Iron, Austria-Hungary, and steel 757, 997 

Iron Blossom, Utah 115, 334, 416, 582, 624, 

668. 799 

Iron, Brazil, deposits *761 

Iron, Can., and steel 483, 484, 593, 997 

Iron Cap Copper. Ariz 498, 666, 921 

Iron, Cast, Metallography of Steel and t917 

Iron, Chilean, deposits 36, 53, 118, 869 

Iron, China, deposits 799 

Iron, Cuba 55 

Iron, Cuba — Mining in Oriente Province ♦587 

—Notes 55 

— Photos. — Mine ; dock *605 

Iron, France, and steel 810, 997, 1010 

Iron, Germany, and steel 376, 503, 671, 997, 1139 

Iron, Japan, and steel *. 133 

Iron markets and prices ^45, ^47. 71 

Iron Mask, B. C 269 

Iron, Jlesabi, formations — Slate and dike 

analysis 433, (erratum), 592 

Iron mine, Hlllcrest, Stripping with sand 

pump ^211, 215, 369 

Iron mine, Staten Isl., N. Y' 792 

Iron, Mineville, sloping costs 227 

Iron mining, Mich., Minn. — Review 108 

Iron, N. Y., mining 112 

Iron, Nova Scotia 484, 641 

Iron, Ont 122, 475. 484. 598 

Iron-ore statistics, U. S. See "Iron, U. S." 

Iron ore found in cellar 408 

Iron Ores : Their Occurrence, Valuation and 

Control t534 

Iron production. Commercial electrolyte for.. 943 

Iron, Pure, Yensen's method 179 

Iron-tiuartz-tremollte belt. Black Hills gold- 
bearing *770 

Iron Silver Mg. Co 642 

Iron smelting. Electric — Notes 329, 687 

Iron, Sweden, and steel 997, 1000 

— Origin of Kiruna ores 103 

— Elec. smelting, Trollhattan 23 

Iron, Tex., development 1052 

Iron, United Kingdom, and steel and ore : 

—Pig 808, 757, 997 

— Iron from native ore in 1914 347 

—Ore in 1915 1109 

—Steel 840 

— Foreign trade 284. 419 

— New statistical bureau 273 

Iron, U. S. and steel and ore 69 

—Pig 41. 70 

— Pig, revised ; by states 513, 997 

—Rails 807, 714 

— Allov-steel rails ' 850 

—Ore 41,69, 128,167 

Revised ; by states lOiiO 

Rail shipments, by ranges 593. 585 

Review of 1915 89 

Lake situation 26 

Capacities of docks 876 

—Foreign trade 418, 419, 503 

— Chromic iron ore 808 

— Iron and Iron-ore supplies 1128 

Iron, Utah — Iron Mtn. deposits 1136 

Iron — Wis. Geol. Survey studies 1136 

Iron, World, pig production 997 

Iroquois Iron, 111 1050 

Irrlgatlon-dltch costs 940 

Irvine, L. G. Gas poisoning 901 

Irt.vsh Corp., Ltd fiS 

Isabella mine, Colo 496.607 

Isle Royale, Mich. 76. 141. 200, 372. 413, 

539, 667. 1006 

— Report 947 

Italy Iron 997 

Italy mineral output In 1914 762 

Italy sulphur 762, 9.-i7 

Ivanhoe Con., Ariz 621. s:!4 

Ives. Geo. I., Death of l.^S 



Jack mine. Helena, Mont 919 

Jackhamer. See "Drills." 

Jackllng. D. C. Yacht of •1040 

Jackson Brothers. Chile 295 

Jackson. George R 579 

Jahn. William F 958 



Page 

Jallings, J. H. Elevators t917 

James, C. H 409 

James, W. H., refractory-ore process 1114 

Jamesonite near Zimapan, Mex 89 

James. J. R. Slow cyanide poisoning 444 

Janin. L., Jr. Concentration formulas 17. 187, 

402. 612. 613 

Janney. F. G., Death of 912 

Japan bullion exports 839 

Japan copper 48, 133, 956, 1010, 1020 

Japan gold and silver 43, 133 

Japan mining in 1915 — Productions, com- 
panies, etc 133 

Japan zinc 133, 134, 458, 1020 

Jennings, E. P., Death of 198 

Jennings, Hennen 574, 918 

Jennings, J. P 409 

Jennings, S. J. — Photo •527 

Jensen, R. C 276 

Jerome, Ariz., district 876 

Jerome Con. Gold Mines 877 

Jerome-Superior Cop., Ariz 962 

Jerome-Verde, Ariz 876, 1005, 1049, 1133 

Jerry Johnson mine, Colo 798 

Jig, Joplin hand ^479 

Jig, Steel's, for gold dredge •692 

Jigback for constructing incline ^221 

Jigging Slocan silver and copper 860 

Jigs, NeiU, on Natomas dredge ^207 

Jim Butler, Nev 203, 281, 455, 500, 879, 1051 

John Reed group. Colo 619 

Johnson. F. E. Manganese vs. chrome steel 

roll shells 907 

Johnson, G. E. Borax in matte fusion *648 

Johnstone, .T. 0. Burette filling ^781 

Jones, E. H 367 

Jones, H. C, Death of 706 

Jones. H. S. Diesel Engine t917 

Jones', J. R., coupling hook •648 

Jones & Laughlin, Mich 622 

Jones mixer case decided 132 

Jones, V. K. Calculation of solar observa- 
tions 941 

Joplin bank deposits 915 

Joplin di.st. in 1915 64, ^44, 61, 109, 606 

— Ore production, revised 336, 572,608 

Joplin dist. selling agency 542 

Joplin hand-jig ^479 

Joplin labor and wages 109, 751. 1048, 1091, 

1096. 1132 

Joplin, Magazine stories from 702 

.Toplin mill-liuilding activity 370 

Joplin ore deposits. Origin of 102 

Joplin Ore & Spelter Co 609,999 

Joplin Region, Origin of Zinc and Lead De- 
posits of t36« 

Joplin school children's sanitation 834 

Joplin Zinc Ore Producers' Asso 1091 

Joplin zinc-smeltery plans 620 

.Jordan, David Starr 874 

.Toslin, G. A 706. 1088 

.Tualin-Alaska 136 

Judge Mg. & Smg. Co 1048, 1094, 1136 

Jumbo Extension, Nev. 163, 202. 373, 582. 754, 

964. 1051, 1135 

,Tumbo Junior, Nev 922 

Juneau mining in 1915 131 

Jupiter. Ont. See "Mclntyre." 

Jupiter mine, Transvaal 122 

Juragua Iron Co ^587, 'OOS 

Justrite Mfg. Co 832 

K 

Kane Springs. Calif., Potash near 1134 

Kansas City-Nev. Con 500. 1094 

Kansas petroleum 80, 468 

Kansas zinc and lead..B1. 64. 33fi. 572, 606, 608 
Kaolin, Flocculatlon of. See "Flotation — Col- 
loids." 

Kamna, Sweden. Iron ores 103 

Keating Gold, Mont 1C3. 242, 922 

Keeney, Robert M 535 

Kellogg, L. 0. Elec. welding 744 

Kellow rock drill •729 

Kelp screen, Pumplng-plant *983 

Kemp. J. F., on Cuban geology '588, 590, 591 

Kenefick Zinc Corp. (see also "United Zinc 

Smelting") 453, 622. 661, 999 

Kennecott Cop. Corp. 24. 201. 365, 487, 538, 

621, 661. 710, 871. 877. 1048 

— Report 788, 955 

— Developments In 1915 52 

Kennecott strike threatened 496 

Kennedy, E. P. Tamping. Treadwell mines.. 560 

—Machine drilling. Treadwell mines 643 

Kennedy, J. E. Zinc mining. Wis 65 

Kennedy manganese mine. Va 1094 

Kennedy M. & M. ; Zella mine 30, 795 

Kennedy. William 330 

Kent. W. Merh. Engineer's Pocketbook t534 

Kentucky petroleum 80. 468 

Kenzle. Ont 1007 

Kerchner, L. S 276 

Kerns. R. W. Internatl. smeltery •421. •SBS 

Kerr Lake Mg. Co. report 399 

—Notes 243. 500. 799. 871, 023, 1007. 1052. 1094 

Keweenaw Cop. Co 140, 753, 798, 922 

— Report 822 

Key, A. C. Rand mining •SOB 

— Rand earth tremors 995 

— Dust allaying. Rand mines *1065 

— Win Am. capital be attracted to Far East- 
ern Rand? 1124 

Keylioard method, shaft timbering •438 

Keystone. Calif 241. 064. 708 

Ke.ystone mill. Philippines ^989 



.lanuaiy 1 to June 30, 1916 THE ENGINEERING & MINING JOURNAL 



Page 

Kiv.slniie Jig. Co., Utah 380, 879, 1094 

Kliiiaiiiy-MorBan, Ariz 1133 

Kiiii;, E. C. Seasoning reverbcratorles *Til 

King Kilward, Ont 712 

KlnK Zinc, N. iM 540 

Kingman, Ariz., Conditions; map 'S 

Kinvon, Alonzo G 831 

"Kirliv, S. R.." Sinking of 920 

KirclKMi. .Joiin 494 

Kirli Siiieiting Co 542 

KiiliL'lj.v & Lundgren properly 1004 

Kiri\eganrd. P 450 

Kirliiand Lak-e G. M., Ltd 481, 905 

Kittimac mine, Colo 31, 280, 499, 798 

Kltto, F. H 1038 

Klepinger patent for smelting copper fines... '479 

Klondike, Liibecker excavator on •1057 

Knight, C. W. Origin of Sudbury nickel- 
copper deposits •Sll 

Knob Hill, Wash 837 

Knopf, A. Economic geology 102 

Kno.x, H. H. Zinc and lead, Siberia 65 

Knox, Newton Booth 794 

Knox, Robert M 706 

Konomax drill. New '564 

Kootenai Ore Treatment 837 

Korea. See also under "Japan." 

Korea, Operations in 102, •524, •1036 

Kotze, R. N., on Eastern Rand 1124 

Kougarok Dredging Co 101 

Knwkash Gold Area t917 

—Notes 121, 1048 

Kozlowskl, Roman 1001 

Krejci pat. for smelting cop. fines •479 

Krogdahl, A. A 198 

Kroromic, Calif 414 

Kruester, Geo., and Associates 76 

Krugcr, H. A 28 

Kruger, P. F. Oxyacetylene welding. Bra- 
den 230 

Kuhara Mg. Co 1052 

Kur.vla, M. H 1130 

— Cvaniding and stope filling 266 

Kusa Spelter Co 62, 93, 606, 609 

Kuskokwin dredge. New 805 

Kutter's formula coefBcients. Better 675 

Kuzell, C. R. Coal-dust firing In reverbera- 

tory furnaces ^302 

— Roasting-niatting cop. fines ^479 



La Belle Kirkland 964 

La Colorada mine. Mex 620 

La Dura tungsten mine. Peru •358 

La Grange, Calif 202, 1050 

La Harpe Spelter Co 61. 62, 77, 609 

La Luz camp, N. M 1135 

La Paz Gold, Ariz 30 

La Rose, Ont. 243, 500, 624, 665, 712, 754, 

83", 871 

La Salle Cop. Co 141, 200 

— Report 822 

Labbe. C. Repairing roll frame *562 

—Installing tube mills '777 

— Cooling gas-engine water in cyanide plant *860 
Labor. See also "Compensation." For labor 
troubles of individual companies see proper 
names. 

Labor. Alaska — R. R. strike 362 

— Treadwell group wage rates, Douglas Isl. 1115 
Labor, Ariz. — Clifton-Morenci strike, etc.— 

Wage scales before it 24 

— Assessment-work interference 194 

—Strike settled 197 

— New strike 362 

—Notes 30, 53, 74, 105, 161, 278, 369, 413, 

497, 661, 833, 1004 

— Oatman dlst. wages, etc 6, '898 

— Warren dist. wage Increase 581 

Labor — Broken Hill strike 373 

Labor, Butte— Notes 109, 111. 239. 240, 412, 

750, 875, 1003, 1047, 1090. 1131 

— Anaconda employees 141 

Lalior, Calif.. Laws t017 

Lalmr. Colo.— Smelters' strike 487 

— Leadville miners' unrest 795 

Latior — Companies' force Increases 1085 

Labor — Copper miners contented 197 

Labor. Ida. — Wages advanced 453 

— Wage-payment law construed 1028 

Labor — Kennecott demand 496 

Labor, Mich., notes 161, 200, 961 

Labor, Minn., troubles, Va. dist 1132 

Labor, Missouri, notes 109, 751. 878, 920, 1024, 

1048, 1091, 1096, 1132 

Ln bor, Ontario, conditions 528 

— Wage Increase, Cobalt 920 

Labor — Profit-sharing, lead and copper min- 
ing 447, 612 

Lalior situation. The 914 

Labor — Steel-trade wages 166, 200, 235, 746, 757 

Labor. Transvaal 123 

Labor, TItah — Wage Increase 240, 277, 278. 876 

Labor — Youngstonn troubles 155, 167, 925 

Laboratory, Chile Cop. Co ^400 

Lackawanna Steel Co. 8, 35, 71, 78. 166, 

337, 406, 801 

— Report 687 

Ladoo, R. B. Laboratory cyaniding agitator ^440 
Lalst, F. Flotation, Anaconda 469, •480, 

508, 562 

— His electrolytic zinc process 425 

Lake Angellne. See "Cleveland-Clifrs." 

Lake Cop., Mich 141, 200. 1006 

Lake iron-ore situation 26 

—Review of 1915 69 



Page 

—Shipments by rail 593,585 

— Capacities of docks 876 

— Production, by states 1060 

Lake mine, Colo 162, 415, 1134 

Lake Shore mine, Ont 799, 837 

Lake Sup. copper dlst. in 1915 (see also 

"Mich.") 140 

Lake Sup. Mg. Inst. 184, 222, •354, '521, 

617, 1089 
Lakevlew Mg. Co. 114, 139, 203, 582, 837, 

1052, 1133 

Lamb, M. R. Gold mining, Chile 1110 

Lamb, R. B 794 

Lamberton mine, Minn 1091 

Lamps, Carbide — Copper dangerous? 859 

— Explosibility of acetylene 10 

Land, Coal, decision, Utah 580 

Land, Mineral, Classification 1*17 

Land, Oil, cases, Calif 239, 496 

Land opening, Sevier Co., Utah 875 

Land patents. Expediting — N. W. Convention 

resolution 724 

Landing chairs. Substitute for •SIS 

Landing chairs; transfer truck •1074 

Lane, L. Mex. mining law 187 

Lannon, James A looi 

Larry, Charge-collecting, Midvale •SSS 

Last Chance dist., Calif 1047 

Last Hope mine, Mont 5S2 

Latest Out mine, Ida 178 

Laura Lee Co., Colo 415 

Laurel Canyon mine, Ariz 371 

Lava, Wyoming, Potash from 1020 

Laveile, W. J 450 

Layers, H., fiotation patent 22 

Lavino, E. J., & Co 671 

Law. See also "Compensation," "Tax," "Con- 
gress," litigating companies by name. 
Law — Bureau of Mines Abstracts of Current t917 
Law decisions : 

— Contract, Breach of mining 981 

— Idalio wage-payment law 1028 

— Leasing contract liability 675 

— Lien law, Colo 810 

— Lode claims. Conflicting 598 

—Lode locations. Rights under 1042 

— Mine-law violation as negligence 1067 

— Mineral rights in land. Reserving 1104 

— Patents and extralateral rights 974 

— Safeguarding setscrews 930 

— Stockholders' right to samples 352 

— Trespass, Waiver of 549 

Laws, Ariz 105, 665, '898 

Laws, British patent 773 

Laws, Calif 29, 199, 277, 352, 452, 536 

Laws, Calif. Labor f917 

Laws, Canada — New Dominion law badly 

needed 1038 

Laws, China — New code 537 

Law, Colombian mining 1064 

Laws, Ecuador mining 344 

Laws, Honduran mining 428, 448, 769, 1118 

Laws, Mexican mining 187, 278, 789, 827 

Laws, Mont 88, 536, 795 

Laws, Peruvian 848 

Laws, Quebec, revision 331 

Laws, Reform of raining 787, 790,823 

Laws, Revision of mining 154, 172, 196, 272, 

405. 449, 491, 492, 568, 573, 660 

— N. W. Mg. Convention resolutions 655, 724 

Laws, Yukon placer ^722, 'SOO, 1038 

Lawton, Nathan 237 

Lay, D. Slocau district •463 

— Roll steel discussed 613, 907, 951 

— Dynamite-gas neutralizer 601 

— Fire-protection for mills 602 

— Truing roll shells with emery 691 

— Saving Slocan silver and copper 860 

Lay tongs for pipe ^1072 

Layne & Bowler Co. — Rapid pump nifg 1031 

Lazarus, L., & Sons 157,276 

Le Brun, L. F 1046 

Le Due, Calif 279 

Le Fevre, S. Divining rod 651 

Le Roi No. 2, B. C 268,270 

Lea, J. T., Death of 958 

Leaching, Copper. See "Copper" and proper 

names. 

Lead acetate, Substitute for 440 

Lead and copper mining. Profit-sharing In 

447, 612 

Lead, Australasia 127 

Lead, Bawdwin mines, Burma 20 

Lead, Brit. Col 236, 26S 

— Prices for munition purposes 755 

Lead, Broken Hill Prop. Co 42 

Lead, Calif 199 

Lead, Canada 483, 484, 597 

Lead, China, mine 1064 

Lead, Disseminated, discovery, St. Francois 

Co., Mo 365 

Lead, Idaho 56, 177, 436, 1090 

Lead, Joplln deposits. Origin of 102 

Lead market and prices (Including ore) In 

1915, etc ^44, ^47, •56, 58, 64 

Lead market — London prices •47, ^56 

Lead metallurgy In 1915 89 

Lead, Missouri and vicinity 56, 64 

— Missouri production, revised 1090 

— Mining in S. E .dist 59 

—Mining in Joplln dlst 64 

— Joplin dist. ore. revised 336,572 

Lead paint prohibition. British 850 

Lead. Peru •846, 848 

Lead, Pig. market— A. S. & R. policy 569. 583. 625 

Lead poisoning 90 

Lead. Rhodesia 373 



Page 

Lead, Russia — Siberian mining >,5 

Lead, Sliver, smelteries. No. Am 58 

Lead situation, current 531, 573, 719, 743, 

913. 1043 

Lead smelters. The 660 

Lead smeltery. Bunker Hill & Sullivan '868 

Lead smelting data, St. Jos., Herculaneum. . 983 

— Matte sintering and double roasting 943 

— Rapid analysis. Belle Terre 650, (erratum) 781 

Lead, United Kingdom 335,347 

Lead, U. S 41. •SS 

— Imports and exports 446, 826, 957, 1126 

—Ore, 1911-1914 128 

— Mine, smeltery, refinery map •o? 

— Outputs of certain companies 660 

Lead, Utah 115, 140, 1090 

Lead, White, and oxides 57,714 

Leadville, Colo., manganese 159 

Leadville, Important work; pumping 106, 642, 

663. 919, 1110, 1131 

Leadville labor unrest 795 

Leadville zinc 608 

Leadville mine, Ariz 1049 

Leadville, What's the matter with? 1109 

Leaks In pipes. Stopping ^941 

Leases, Valuation of oil •OSO 

Leasing contract liability 675 

Leasing venture making good. Another 360 

Lcavitt, E. D., Death of 579. ^743 

Lectures, Military-engineering 306, 362, 446, 

•514, 532, 721. 1000, 1042, 1070 

Leddell, W. J., Death of 874 

Lehigh Coke Co 8. 78 

Leland, Frank M 157 

Lena Goldflelds; Lenskole Co. — ^Winter min- 
ing photos •443 

— Will dredge gravels 719 

—Notes 125, 668 

Leonard mine, Calif 752 

Lesher, C. E ', 28 

Levens.iler, L. A 794 

Levorsen. A. I. Backing maps I072 

Lewis and Marks interests. Rand 1124 

Lewis, H. E 450 

Lewis, I., project. South Af .'. 616 

Lewisohn, Adolph 450, 616, 1046, 1124 

Leyner drill sharpener, Chinese operating. . .•1036 
Leyner oil-burning furnace. Preheating steel 



in 



Leyner vs. piston drill 

Library report. United Eng. See 

Liddell, Donald M 

—Pulp and metalllcs assays 

— Metallurgists' and Chemists' Handbook. . 

Lien law, Colo 

Lifting, Safety-first in 

Lighting protection for stacks 

Lilly hoisting controller 

Lime, Gray acetate of, under Brit, restric- 
tions 

Lime in assay lluxes '. . 

Lime manufactured. U. S 

Lindgren, W. National, Nev., ore 

Lindsey, G. G. S 537, 

Lings, Scott 

Lining. See "Tube-mill," "Furnaces." 

Links, G. P. Primers and misfires 

Liquid air. Blasting with 

Liquid manometers, Light-pres 

Liquor prohibition 105, 109, 126, 

Litchfield sheave lining 

Litharge as substitute for lead acetate .... 

Little, Arthur 

Little Giant, Colo '. 

Little Gladys mine, Colo .' 

Little Mack mine, N. M 

Little Pittsburg. Ida 202, 280, 

Littleford's sliincs treatment 

Livermore. II. P. . Death of 

Livingstone on matte assa.ving 

Llallagua Co., Bolivia 119, •17:;, 

Llama pack trains •7S2. 

Lloyd " " 



•1035 



612 
t705 
810 



103 
1088 
579 

12 
998 

•942 
160 

•356 
440 
831 

1006 



273 



Loader, Underground car 184 

Loading station. La Playa. Cuba ^605 

Locke. A. Interpretation of assay curves for 

copper driil holes •726 

Lockviood's Murcx process 765 

Locomotive coupling hook. Jones' •MS 

Locomotive gong. Automatic •lOSl 

Locomotives, Gasoline. Air vitiation bv 645 

Lode claims, ' Conflicting ". 59s 

Lode locations, Riglits under 1042 

Log splitting with dvnaniite 184 

Lola C. Mont 922 

Lola Hill, Cuba •fin.'". 

London Ariz. Cop. Co 1039 

London markets. See "United Kingdom." 

London Metal Exchange 1044 

London mine, Colo 581, 833. 1006 

Long. C. S. Lease making good 360 

Long. Henry Thomas «■;(, 

Longmaid. J. H.. Sr.. Death of 28 

Long.vear horizontal drilling record 1081 

Longyear shaft sinking, Norwav 600 

Lopez, Pablo, shot 1045 

Lorenzona Ore P. & R. Co 752 

Loring, W. J iflsj; 

Los Angeles — Chamber of Mines 15S. 831 

Los Ocotes shaft timbering 17 

Los Packer. Ida 179. 9i;'! 

Louisiana petroleum SO 4H< 

Lowell. F. L .' jjo 

Lower Mammoth. Utah !!!!!!!!!!! iii.; 

Lubecker excavator on Klondike '. '•in.-.7 

Lubrication. Wire-rope •s.is 

Lucky George. Mo " " 76 



THE ENGINEERING & MINING JOURNAL 



Volume 101 



Page 

Luckv Six Mg., Wis "8 

Luera.1 >lg. Co., Calif 452 

Luitwieler, J. C, and Bolivia tin smelting 

25, 33. 164, 174 

Lumry & Moore. Utah 33,139 

Lundbotun, Hjalmar 579 

Lunn, C. A 663 

Luty, B. E. V. Pittsburgh markets 71 

Lyman, J. Grant 493. 1085 

Lvnch Bros., Alaska, drilling record 961, 1081 

Lyndon. L. Can you beat it ? 1039 

Lyon, M. Smelting, Panucillo. Chile 187 

Lyons Atlas air compressor *439 

M 

MacArthur-Forest cyaniding of antiraonial 

ores 224 

.McCaffery, R. S. Electrolytic copper reflning 9 

McCaskey, Hiram D 28 

McClain. Henry G 28 

McClelland, Joplin, llo 1050 

McClintic-Marshall Const. Co 670 

McCUntock, W. H., Death of 1046 

JlcComiac, Thomas 1001 

McCrea mine, Ont 879 

McCullough, Ernest 663 

McCutcheon's gallium-indium alloy 720, 937 

XIcDermott. W. Brit, mining men at front. . 932 
McDonald, D. F. Earthquake danger, Pan- 
ama .* - ■ ■ 529 

Macdonald, J. A. Bench claims, Tukon,'. . . .*722 
—Remedies for incongruities of Yukon placer 

regulations *806 

— Idiosyncrasies of the paystreak *SM 

— New Dominion law needed 1038 

McDonald, Louis X 1088 

McDonald mine. Mo 453 

McDonough claim. Ont 33, 121. 203 

McDougal roasting furnace 1023 

McDougall, D. H 535.1089 

McFarlane. Captain. Death of 157 

SIcFeely, G. C. Mine cost system 688 

McGinty, B. Simplified spelling 445 

McGinty block, Making '14 

McGoTem, Jas., Death of 409 

McGrath, T. O. Business efficiency 784 

McGrigor, G. D. Field Analysis t917 

McGuckie, Thomas 1088 

McGuire Bros., Colombia 119 

McTnnes, Hector 367 

Mclntvre-Porcupine and Jupiter, Ont. 33. 78. 

121. 243. 373. 624, 668. 879. 964, 1094, 1136 

McKay, A. A 535 

McKay. George F 450 

McKechnie. B. E 831, 1001 

McKee. Fred W 831 

McKee. Ralph H 958 

McKinley-Darragh 582, 624, 712, 871, 876, 

923, 1136 

McLaren, A. Chilean mills vs. stamps 15 

— Amalgamating copper plates 647 

McNair. Frank J 918 

MacNamara mine, NeT 456, 540, 1051, 1135 

MacNaughton. James 1088 

— Copper production in Mich 51 

McNeill. Alex. S 1089 

McNeill. .John 874 

MacNichol, R. W 794 

McQuatters. A. .T 918 

Mace mine. Minn 455. 667. 711 

Mace No. 2 mine. Minn 261. 836 

Machine drill. See "Drill." 

Madagascar gold 43 

Madden. Mont 922 

Madden Scratch Gravel. Mont 622 

Madison Mg. Corp 798 

Magalia di.st.. Calif 1049.1131 

Magazine. See "Explosives." 

Magdalena. N. M 623 

Magee. J. P. Milling tungsten ores '717 

Magellan Straits, Dredging 403 

Maema Cop. Co. reports 732,957 

—Notes 621. 962. 1004 

Magmatlc-segregation theory *811 

Magner. E. N., Death of 330 

.Magneslte. Calif., near Portervlllc 75, 162. 

202. 452. 496. 539. 619, 875. 87S 

Magneslte Products Corp 158 

Magnesium industry. Metallic 652 

Magnetic phenomenon. Peculiar, Caribou tun- 
nel •444 

Magnetic process. Murex 765 

Magnf'tic separation. See "Separator." 

Macii'li.i Metal Co 74. 79 

Magrii] H.. rhrome-orc tapping blocks 778 

— Sintfriiig flotation concentrates •1032 

Mahoning mine shipments 593. 1060 

Majestic, fliili 334^ 837 

Malaya tin 67. 244 

Mallcltc. Walter K 958 

Malm process. The (571) 

Statements by Malm and Tonldes !!.!.S64 

Mambulao Placer Cit 10' 

Mammoth Cop. Mg. Co.. Calif. 52. 75. 167' Ml' 
239. 241. 2.i9. 411. 454. 710, 877. 1064'. 

1093. 1134 

M.immoth mill, N. M ..4:; 

M.immolh mine, Ariz , . '. 414 

Man from the Bitter Roots" 4(»3 

.Management. Symposium on ,',,[ fldc 

Mandlnga. Pan., manganese mines 500 

Manganese. Ark., mining 1092 

Manganese. Brazil iio •759 

Manganese. Brillsh, ore Imports '. . "84 

Manganese, Calif., notes 31, 797. 498. 062 

1133. '1134 



Page 

Manganese. Colo. — ^Leadville 159 

Manganese, Cuba, shipments 55 

Manganese. India 137 

Managnese. Ferro, U. S 41 

Manganese ore. Vermilion and Cuyuna 
Ranges: Vermilion Con. 163, (correction) . . 408 

Manganese. Russian, industry 894 

— Notes 36, 126 

Manganese, South Australia, found 549 

Manganese, South Carolina 'lOig 

Manganese steel at St. John del Rey 185 

Slanganese steel — Shrinkage, etc 1034 

Manganese supply of Germany ; steel without 

manganese 957 

Manganese. U. S.. ore 128, 284.503 

Manganese- vs. chrome-steel roll shells.. 613. 951 

— Crusher plates 907 

Manitoba — Gold Lake dist '339 

Manitoba — Gold N. W. of Pas 796 

Manitoba production 484 

Manometers. Light-pres. liquid •942 

Mansfield. G. R. Phosphate, Wyo 428 

Mansur. D. A.. Mo 70 

Manufacturing. Rapid pump 1031 

Manzanita mine. Calif 414. 622 

Map, Gold Lake dist.. Man •SSO 

Map of Bolivia •173 

Map. Peruvian mining *846 

Map. Sudbury nickel district *811 

Mapimi smeltery. Mex 164 

Mapping and sampling. Esperanza 551 

Maps — Ariz, districts ^4. '5 

Maps. Cloth backing for 1072 

Maps. New Geol. Survey 724 

Maps, r. S. — Smelteries, etc. •SO, ^57. •OS. 

•98. 259 
Marigold. See "Marysville." 

Mariposa Estate. Calif 159 

Markets for Eastern-Can. ores 597 

Marliere. L. C. de la Dredging. Mozambique. .•673 

Marquard. Frank F 663 

Slarquette Range — Analysis of slate and dike 

433. (erratum) 592 

Marriott, H. F. Transvaal in 1915 122 

Marsh mine. Ida 878, 1006, 1134 

Marshall, J. W.. monument •1036 

Martha Wash. G. M. Co 920 

Martin. Geotfrey. >Iodem Chemistry t705 

Martin, George W. Cost of heating build- 
ings 986 

Martin. Wm.. plant 75 

Mary Murphy mine. Colo 180, 1047 

— Report 945 

Maryland Geol. Survey parties 1089 

Marysville Gold Dredging Co., Calif. 100, 107. 

199. 414. 581. 878 
— Launching Marigold No. 5 dredge '808. (er- 
ratum) 919 

Mar.vsville Gold Mg. Co.. Mont 711, 919 

Mascot Cop. Co 453. 454. 666, 1049 

Mason & Barry, Ltd.. report 905 

Mason Val. Mines Co 52, 77. Ill, 886 

— Report 946 

Mass. Con.. Mich 200. 1006, 1093 

— Report 822 

Mass. Inst, of Tech. buildings •1077 

Massey mine. Ont 597 

Matahambre mine. Cuba 55. 540 

Mathers. F. C. Nickelplating with pure 

nickel 819 

— Electrolytic silver reflning 1075 

Matte fusion. Effect of borax in •648 

Matte sintering and double roasting, St. Jos. 

Lead Co 943 

Mattes Bros 76. 1004 

Mattingly, B lOSS 

Mattson. J. E.. Death of 91S 

May Day. Utah 923 

Maycumber. W. R 603 

Mayo mine. Yukon 624 

Maxwell. .T. D 10S9 

Mazapil Cop. Co 52, 118 

Mazda Tungsten. Colo 797 

Mears-Wilflev, Colo 76 

Mechanical Engineer's Pocketbook. Kent's +534 

Medals for old employees. C. & H 1122 

Media mill. Mo ^441 

Meeker Mg. Co 32.112 

Meggen, We.stphalla. ore deposit 10:i 

Megraw. H. A. Metallurgy of gold and 

silver ci4 

— Flotation progress In 19115 ..] •o; 

Megson, J. E. Diesel Engine !t917 

Meln. William W 409. 450. 1124 

Melones Mg. Co 75. 877 

Melstead, B. J .' s"! 

Memphis Red River \\2 

Mentzel. Charles nn^ 

— Gravity Incline with limited cable '.I.^O 

Merced mine. Calif. 30 

Mercer. J. W. Mining In Ecuador 343 

Jlerehants Finance Co. : Western Metals Co 

75. 79, .-,57 
Mercury. See "Quicksilver." 

Merrlam, W. N.. Death of Hiii 

Merrill. F. J. H '.'.^n'n 

Merrlmac mine. N. M 4.'-,(; 

Merriss, M. H ;4s 

Mesabl. New stripping method 261 

MesabI mill ore Hhlpmonis 59:! 

Mcsalii strike 1 1:12 

Metal-coating processes I07n 

Metal ecnnom.v— Military preparedness 659 

.Metal exchange. Why not a? (See also "New 

York") 863, 871 

Melal Imports and exports 446, 756 

Metal Manufactures, Ltd 1121 



Page 

Metal prices since 1879 — Chart ^47 

Metal prices in 1914 and 1915 (see also 

metals by name) — Charts •44, ^45, "SO 

— Geol. Survey spelter price 755 

Metaline Oriole. Wash 923 

Metallic products. Secondary, e.xports and im- 
ports 714 

Metallography applied to ores 1084 

Metallography of Steel and Cast Iron t91' 

Metallurgical. See also "Smeltery," "Fur- 
nace," names of metals, companies, proc- 
esses, etc. 

Metallurgical Analysis. Brief Course in t366 

Jletailurgieal consti-uction. New. in 1915.... 75 

Metallurgists' and Chemists' Handbook t705 

Metallurgy, Improved, as aid to conservation 291 
Metals, Current situation in. See also metals 
by name. 

Metals — Handwriting on wall 1043 

Metals. Non-ferrous, Buying and selling, in 

South Am 292 

Metals, Prices for the 913 

Meter. Bailey pipe-flow *1034 

Metric law, TTruguay — Catalogs 959 

Metric system and India 830 

Metric system movement 700, 703, 823. 950 

Mexican, Comstock, Nev 29, 833, 837 

Mexican Petroleum Co.'s gusher 808 

Mexico : 

— American mine employees leaving 1123 

— A. S. & R. mines in 1915 58, 116, 117 

— Balls, Steel, for Mex. mills 575 

— Complexities — Native characteristics. .952. 1039 

^Copper 48 

— Currency depreciation 1085 

— Dunn and Francis in prison 1089 

— El Oro dist. in 1915 209 

— El Oro ores. Galena in 819 

— Esperanza sampling and mapping 551 

— Explosives, Shipping, to Mex 468 

— Export duty, Sonora 751 

—Gold 43 

— La Colorada must reopen 620 

— Laws, Mining — Taxation 187. 278. 789, 827, 1091 

— Metallurgical conditions — Review 95 

— Mining in 1915 116 

— Notes, Various 74, 278. 365. 373. 413. 4.53. 

754, 796. 869. 1004. 1024 
— Pachuca, Concreting Barron shaft. . .•676, 700 

— Petroleum 284. 808. 882 

— Phelps-Dodge report 651 

— Present conditions in Mexico 266 

— Progress in the situation 1127 

— Railway traveling 340 

— Registration notice. Mex. consulate 1085 

— Rulers since Diaz 575 

— Santa Ysabel massacre 151. •190. 195. 2.36, 1045 
— Silver ores. Metallurgy of native, S. W. 

Chihuahua •297 

— Spelter 608 

— v. S. Smg. Co. statement 181 

—Villa. Pursuit of 531, 615, 746, 871. 914 

— Zinc ore. Villa duties on 1059 

Meyer, Eugene, Jr 617 

Meyer. F., annular sinterer ^526 

Miami. See al.so "International Smg." 
Miami Cop., Ariz. 24, 54. 75, 106, 279, 327 

513, 710. 869. 992 

—Report 741, 742, 955 

Jliami Products Co 503 

Mica. S. D 436, 964 

Michigan copper 48, 51. 200 

— By individual mines 200 

Mich. Creek. Alaska, gravel 10J9 

Mich. Iron ore 106O 

Mich, labor notes 161, 200.961 

Mich, mine, Colo 239 

Mich, mining in 1915 ."1O8, 140 

Mich, silver 43 

Mich, taxation 200, 920. 961 

Mich.. University of 409 451 

Mich. -Utah 243, 879, 1136 

Mich. Vanadium In 736 

Midas. Calif. See "Victor." 

MIddleton. A. E. Air or electricity In slope 

haulages 221 

Midland Chemical Co ...'. 750 

Midnight mine. Ariz 1049 

Midvale Steel & Ord. Co 55. 71,375 

— Absorbs Cambria Steel 326, 337^ 406 

Midwest Reflning Co 160 

Midwest Sulphur. Wyo 1136 

Military. See also "War topics." 

Military Preparedness and the Engineer t705 

Mill. See also "Milling," "Mills." "Chil- 
ean." "Tube." "Stamp." "Pan." "Roll." 
"Cvanlde." "Copper leaililng." "Concentra- 
tion" and cross-references from It, com- 
panies by name. etc. 
Mill, Ariz. Smg. Co.'s chloridlzing and 

leaching ^803 

Mill. Braden Cop. Co.'s •315 

Mill. Chile Explor. Co '. •soj 

Jim, Commonwealth, photos •229. •8(17 

Mill. Conical. Rotary screen on ..•eOl 

Jim construction activity. Joplin 370 

Mill. Media, for low-grade zinc ore. Mo ^441 

Mill, Nevada Packard ^247 

Mill, Oneida Stag flotation '•142 

Mill photos.. So. Af ^264 •265 

Mill. Sunset. Nev 520 

Mill, Tomboy, Interior photo •228 

.Mill, Van Rol. Arc protection •fi02 

Mill work — Repairing roll frame ^562 

— Installing tube mills ^777 

Miller. B. LeU. Mining industry, Peru »»tS 

— Cerro de I'asco district •1015 



January 1 to June 30, 1916 



THE ENGINEERING & MINING JOURNAL 



Page 

Miller Independence, Ont 668, 754 

MUler, J. P. K., Death of 748 

Miller & Moesser, Calif 241 

Miller, W. W. New process of gold recovery 

wanted 951 

Miller- Wicliman-Hllton, Calif 621 

MUliken, G. F.. Death of 276 

Milling — Colloids in ore dressing 249, 272, 

•429, 509, »681, •763, •890, 990, 1068, 1105 
Milling costs. See "Cost," names of com- 
panies, etc. 

Milling — James' refractory-ore process 1114 

Milling native silver ores, Batopilas "297 

Miller, B. L. Mining in Cuba •587. •605 

— Mining industry, Brazil •759 

Miller, Willet G 958 

Milling of tungsten ores ^717 

Milling practice in Anaconda flotation plant 

•469, •480, 508, 562 
Milling practice. Sons of Gwalia 224, 225, 

263, 356 

Milling Slocan ores •463 

Mills, Copper Range — Photos •IS, •ig. •llie 

MllU, Philippine— Photos. *\%%. •442, ^948, 

•989 ^1117 

Mills. Steel b.ills for Mex .' . . 575 

Mills, Transvaal stamp and tube 123 

Mine inspectors, etc., State 104 

Mine inspectors' conference 467 

Mine la Motte Co 60,109 

Miner in the trenches, The 490 

Mineral Land. See "Land," "Law," etc. 
Mineral lands, Unworked, Latin Am. 448, 

428. 769 

Mineral Point Zinc Co 62. 66, 78, 456, 609 

Mineral Products Corp. 82, 115, 140, 281, 

373, 875, 1136 

Mineral rights in land sold. Reserving 1104 

Mineralogy, Dana's system of t705 

Minerals Separation System. See also "Flo- 
tation." 

Minerals Separation, Ltd. — Report 641 

— Wood flotation machine ^175 

— Hebbard-Harvey flotation machine 231 

— Anaconda's machinery ♦469 

— Nutter hydrocarbon patent 636 

— Littleford's patent, etc 992 

Miners' examination. Knoxville 13, 230 

Miners' phthisis. See also "Tuberculosis." 

Sliners' phthisis history. Rand 936 

— Du.st allaying ^1065 

Mines Co. of Am., Mei 164, 1123 

— Report 944 

Mines Devel. Co.. Mont 922 

Mines, World's principal, Data 86 

Mineville di.st. in 1915 112 

Mineville stoping costs — Correction 227 

Mining and metallurgical construction. New, 

in 1915 75 

Alining and metallurgy. Improved, as aid to 

conservation 291 

Mining & Met. Soc. — Mining-law revision 154, 
172, 196, 272, 405, 449, 491, 492, 568, 573, 

655, 660. 663 

— Mining-law reform 787. 790, 823 

— Annual meeting. X. Y 176 

— Photo of Pres. Finlav ^527 

—Note 874 

Mining Corp. of Can. (Cobalt-Townsite, Cham- 

bers-Ferland. Cobalt Lake) 668. 837. 964. 1136 
Slining engineer — Age and experience vs. 

youth and education lOSl 

Mining engineer. The 402 

Mining Engineers. See also ".\nierican Inst." 
Mining engineers. Opportunities for unem- 

ploved 360 

.Mining index 38. 286. 460. 628. 842, 1012 

Mining law. See "Law." and cross-refer- 
ences. 

Mining Manual and Tear Book t705 

Mining methods. Accidents classified by ^633 

.Mining methods, C. & A •545, •631,658 

Mining Methods. Utah Cop. Co.'s under- 
ground ^216 

Mining. Practical. Details of t534 

Mining propositions, Chances in 1083 

Mining stock. See "Stock." 

Minneapolis Cop 334 

Minnesota iron-ore production 1060 

Minn, labor troubles 1132 

Minn, mining in 1915 108 

Minn. Steel Co. 71, 76, 109. 202. 280, 455, 

499, 71J 

Minn, taxation 109. 161.1048 

Minn. Testing Laboratories 749 

Mintoe Silver Lead Mg 1135 

Miracle. Ont 78. 456 

Misfires and primers, Regarding 12 

Missabe Mtn. . Minn 753. 963 

Mississippi Valley Iron Co 283 

Missouri. See also "Joplin." 

Missouri and vicinity. Lead 56. 64 

— Revised production for state 1090 

— Mining in S. E. dist 59 

— Mining in Joplin dist 64 

— Joplin dist. ore. revised 336.572 

Missouri labor notes 109, 751, 878. 920. 1024, 

1048. 1091. 1096. 1132 

Missouri Mining Asso 706 

Missouri mining in 1915 108 

Missouri tungsten concentrates 468 

Missouri miv. — Flotation bibliography .IIS 

Missouri zinc fil . 64. 606 

— Joplin dist. ore, revised 336. 572. 608 

Missouri Zinc Smg. Co 1006 

Mitchell Gulch. Mont., strike 582 

Mitchell, John. Death of 409 



Mitchell top-slice and caving system. . .^545, 658 

MlxseU, A. D., Death of 276 

Moctezuma Cop. Co... 33, 161, 237, 281. 373, 1123 

— Report 731 

— Folding safety gate for cages '1111 

Modderfontein B., Transvaal 124, 1124 

Modderfontein Deep Levels 123, 809 

Modderfontein — Govt. Areas.. 123. 809, 1124, 1125 

Mogollon -Mines Co 112, 243 

Mogul, S. D 77, 113,436 

Mohave-Oatraan Water Co 454 

Mohawk Central, Ariz 962 

Mohawk, Mich 140, 200, 415, 753, 963 

Mojave Tungsten Co 371, 1005 

Molding brass cartridges '976 

Molybdenite duty-free 337 

Molybdenite mine. Hour, Calif •SO" 

Molybdenum, Ariz 30, 105, 482 

Molybdenum as tungsten substitute 1027 

Molybdenum, Australasia 128 

Molybdenum, Calif., discovery 1005 

Molybdenum, Canada 475, 483,484 

Molybdenum, Colo 181 

— Strike near Magnolia 199 

Molybdenum in 1915 104 

Molybdenum, South Africa 254 

Molybdenum, Unfused — Correcting porosity. .1020 

Molybdenum, Utah 140 

Monarch mine, B. C 269 

Jlonarch mine, Mont 919,922 

Mond-Castner alkali merger 1024. 9iiT 

Mond Nickel Co 52, 121, 122, 597,987 

Monitor-Belmont, Nev 77 

Monlux, George, Kan 76 

Monroe doctrine Pan-American 301 

Montana. See also "Butte." 

Mont, compensation law 88, 536,795 

Mont, copper 48. 50 

Mont. Frisco mine. Mont 331 

Mont, gold and silver 43 

Mont. Gold Mines Co 878 

Mont. mine. Ida 179 

Mont, mining in 1915 109 

Mont, oil and gas 160, 243, 277, 667. 836 

Mont. Power Co 412.750 

Mont. Reliance G. M. Co 878. 1093 

Mont. Soc. of Engineers 494, 832, 1114 

Mont, spelter fiOS 

Monte Cristo, Mont 919, 922 

Montecristo Sonora 334, 1007 

Monteponi, Societa di 670 

Monterey Steel and Iron 1136 

Montezuma camp, Colo 160, 919 

Montezuma mine, Calif 159, 332. 1133 

Monument to J. W. Marshall •1036 

Mooers. Ed. D 330 

Moonta mines 789 

Moore, E. S.. on Gold Lake dist •339 

Moore, L. C. Auger-drill forming tools ^857 

Moose JItn. Cop. Co 1135 

Morenci. Churn-drill prospecting ^969 

Morgan. Mark R 1046 

Morgan & Owens Bros 241 

Morning mine. Ida 177 

Morris-Lloyd. See "Cleveland-Cliffs." 

Morrison. H. A 367 

Morro Vellio. See "St. John del Rev." 

Morse. B. K., Death of .' 198. 215 

Moscow mine, Utah 456, 623. 668 

Mother Lode mine, Alaska 116 

Mother Lode Co., Ariz 371 

Motherlode Sheep Creek, B. C 270 

Motherwell. W. Slope filling 266 

Motor fuel. Enricht's 792 

Motor truck. See also "Tractor." 

Motor trucks. Military, for border 995 

Motor. Electric. See "Electric." 

Mount Bischoff mine, Tas 128 

Mount Lyell 127. 1121 

Mount Morgan G. M. Co 127 

— Report 905 

— Metallurgical notes — Report 724 

— Chrome-ore tapping blocks 778 

— Sintering flotation concentrates •1032 

Mountain Cop. Co 52, 239, 241, 411, 877 

Mountain House mine, N. M 837 

Mountain King Mg., Calif 75.371 

Mountain Lion. Colo 242 

Mountain Meadows Dredging Co 100 

MozamhiQue, Dredging in ^673 

Mugwump Mines Co.. Calif. 454, (correc- 
tion) 710 

Mulcahy land. Wis 450 

MulUken, H. S 157 

Munroe, C. E. Storing and handling explo- 
sives 349 

Murchison Range (list 123 

Murdoch. J., on metallography 10S4 

Murex magnetic process 7G5 

Murphv. B. F 2,<! 

Murphy. Charles J .i35 

Mysore Gold. India 754 

N 

Nacozari Con 2S1, 500 

Nanganuma, S 1001 

Nason, A. A. Smoke farming 445 

National Cop,, Ida 178. 242. 280. 753. 798 

— Photo, of concentrator •696 

National Fire Protection Asso 1032 

National Foreign Trade Convention 158 

National, .Toplin. Mo 922 

National Lead Co 60 

— Report 693 

National, Prosperity, Mo 1050 

National. Nev., gold ore 103 



Page 

National Tube, See "U. S, Steel" 

National Zinc Co 62. 93,609 

Natomas Co 75, 100, S6«, 795,869 

— Dredge with two UUings stacker* 'les 

— Jigs on No. 7 •SO? 

Natural gas. See "Gas." 

Natural Products Refining 77 

Natural Soda Products 581 

Naumkeag Cop. Co. report 822 

Naval Consulting Board 270, 271,360 

Navy Bean, Joplin dist 932 

Nechi Mines, Colombia 102, 119, 668, 879 

Necrology of 1915 55 

Nederland Tungsten M. & D 31. 106 

Needles Mg. i Smg.. Colo 666 

Needles Smg., Calif 58 

Nelll jigs on dredge *Vi' 

Nelll. W. A 579 

Nellie mine, Ida 1006 

Nelson, James M 1130 

Netherlands spelter 584 

Netherlands tin 67 

Nevada Chemical Co 6fi7 

Nevada Con 52, 74. 111. 1048. 1132 

— Reports 408, 734. 742. 9u0. 95^ 

Nevada copper 4> 

Nevada-Douglas 77, 111. 8'iT 

Nevada gold and silver 43 

Nevada Hills Mg. Co 582, 712,1007 

Nevada Mine Owners' Asso 276 

Nevada mining in 1915 Ill 

Nevada Packard Mines Co. 74, 77, 111. 280. 

964. 1129 

—The mill ^247 

— Photo, of opencut ^657 

Nevada quicksilver 67 

Nevada Scheellte Co 837 

Nevada spelter 608 

Nevada Wonder 163. 871 

— Report 398 

Neversweat Hill. Colo., discoveries 1093 

New Arcadian, Mich 51, 141. 622.963 

New Atlas Mines Co 877. 1049 

New Baltic. Mich 963 

New Brunswick production .484 

New Caledonia shipments 543 

New Cornelia Cop. Co.— Report 530 

— Notes 75. 91. 371. 710.834 

New Eng. Chemical Wks 451 

New Eng. Mg., Mo 76 

New Era Leasing Co.. Teller Co.. Colo 1134 

New Era mine. Clear Creek Co.. Colo 581, 1134 

New Goch. Transvaal 122 

New Golden West Siines Co 33. 879 

New Guadalupe 411. 7.*iO 

New Hope. Nev 77 

New Idria. Calif. 67, 68,538 

— Report 695 

New Jersey iron ore 1060 

New Jersey Zinc Co 62, 203, 609,915 

— Financial statement 912 

— Shaking bags by comp. air 185 

— Rowand's flotation machine •597 

New Mex. copper 48 

New Mex. gold and silver 43 

New Mexico mining In 1915 112. 416 

New Mexico Sch. of Mines 1001 

New Mex. spelter 608 

New mining and metallurgical construction in 

1915 75 

New Modderfontein 123, 1124 

New patents. See "Patents." 

New publications of 1915 78 

—Notices in 1916 366, 534. 705, 917. 1087 

New Quincy. Utah 243. 416, 456, 879, 964. 1094 

New Refractory Ores. Ltd 1114 

New Reliance. S. D 436 

New Utah Bingham 33 

— Unit costs 227 

New York Assay office gold sales 42 

New York iron ore 1060 

New York & Honduras Rosario 120 

New York markets. See also names of 
metals. 

New York Metal Exchange 669. 8,"S 

— Wiv not revive It? 863. STl 

New York military atfairs. See "War." 

New York mining in 1915 112 

New York petroleum SO. 468 

New York preparedness parade •910, 827 

Now York. Smoke farming at 445 

New Y'ork stock markets in 1915 SO 

New York subway strike 679, Cave-Ins 873 

New Zealand statistics 127, 137.714 

Newberry. Andrew W 74S 

Newbery, E, Reducing oxides 1074 

Newfoundland oil shales 436 

Newhouso Tunnel, Colo 619 

Newman. G. W.. Death of 151. *\%\. 193, 195 

Newnam hearth. The 89 

Newport Hydro Carbon 78 

Newport >Ig. Co. — Sinking Woodburv shaft •321 

—Notes 372. 499. 836 

Newton. F. C. Lead desllverizatlon 90 

Nicaragua In 1915 120 

Nichols Cop. Co 369 

Nichols. H. S,. on settline 890 

Nichols refinery system, electrolytic cop. re- 
fining 9 

Nichols. W. H.. Jr 409 

Nickel. Canada 4S3. 4S4 

— Controversy, refinery planned, etc. 370. 418. 

447, 497. 533. 5S0. 597. 620. 626. 665. 709 
Nickel-copper deposits. Origin of Sudbury : 

map •Sll 

Nickel ore. New Caledonia 543 

Nickel, Ont 121, 475 



THE ENGINEERING & MINING JOURNAL 



Volume 101 



Page 

Nickel-plating, Rapid SS" 

Nickel-plating with pure nickel Sia 

Xipkel treatment. Burrows' 8. o 

Nickel, TJ. S A\ 

— Imports and exports ^.^ 

Nigeria tin V v.," **' 

Nipissing, Ont. 203, 3T3, 540, 624, 608, 8'1. ,^„ 
964, Hob 

—Report • • ■ • 9*!; 

Nitrate, Chile 53, 118, 243, 2d9, 3ib 

Nitrate requisition, Russian 1010 

Nitrates from air — Southern Electro-Chem. 

Co etc 1^^' ^^^ 

—Proposed ' GoTt. plant 619, 872, 875, 1064. 1083 

— Proposed Du Pont plant 655 

Nitrogen, Atmospheric 44» 

Nitrogen, The fixation of 108- 

Noble Eiec. Steel Co.; Heroult smeltery 498, 

962, 1133, 1134 

Noble mine, Nev 837 

Nodulizing fiotation concentrates. Braden 441, 

Nordberg-G. E. hoist for Elm Orlu 256 

Nordel, C. H. Air-compressor etBciencies *255 

Nortli Am. Copper Co 1094 

North Am. Magnesite, Que 582 

North American, Utah 334 

North Broken Hill Co 12i 

North Butte 110, 111, 199. 280, 455. 582, 

623, 754, 871, 1007, 1090, 1131 

North Butte Ext 110 

North Car. — Asch Co. possibilities d3i 

North Chandler mine, Minn 1050 

North Lake Mg. Co. report 821 

—Note 1050 

North Star Mines Co., Calif... 31, 581, 835, 1092 

—Report 947 

North Star, Colo 31 

North Star and Triumph, Ida 178, 1050 

North Traders, Mich 1050 

North West Corp.'s excavator •1057 

Northern Calif. Power Co ,-,•„■■ J^5 

Northern Light, Ida <53. U34 

Northern Ont. L. & P. Co 373, 497, 796 

Northern Ore, N. Y 77 

Northport S. & R. Co 58, 108, 540, 799 

Northwest Inspiration 538 

Northwest Mg. Convention 451, 618, 655. 724 

Northwestern Metals Co., Mont 453, 878 

Northwestern Mines Con.; Royal Basin, Mont. 

539, 878 

Norway, Aluminum smelting 751 

Norway elec. zinc smelting 998 

Norway, Shaft sinking in 600 

Notman, A. Chum drilling costs. Cop. Queen 226 

Nova Scotia production 484, 641 

Noyes, T. C, Death of 367 

Noyes, William S 536, 664 

Nozzle eroded by water '572 

Nutter flotation patent 636 



O'Connell, C. 831 

O'Donnell, Thomas A 1046 

O'Flynn, W. R. Concentration formulas 613 

O'Harra. B. M. Black Hills gold-bearing iron- 

quartz-tremolite belt *770 

O'Sbea, Timothy, old employee 1122 

Oatman Combination, Ariz 1049 

Oatman dist. Ariz, (see al.so mines by name) 

•1. 'SOS 

—Maps *4, '5 

—Photos 'OOS 

— Conditions around Oatman and Kingman.. *5 

— Cerbat and Black Mtns 'll 

— "Conversational geology'* 1119 

—Notes 96, 106, 834, 876. 920 

Oatman Gold. Ariz '897 

Oatman, lu praise of 872 

Oatman Pioneer, Ariz 581, 797, 1133 

Oatman Queen, Ariz 752 

Oatman Syndicate Mg. Co 6,898 

Ocean freights 26, 329 

Ocotes mine, Mex 117 

Octo Mg. Co 112 

Ofer Gold Mg. Co 33 

Offlce. Mine-plant 'lllS 

Officer. Hcrliert G 579.874 

Ohio & Colo, .smeltery, Sallda 58. 89 

Ohio Cop. Co 139, 624, 712. 837. 1048 

Ohio jictniloum 80. 468 

Ohmmoter. Direct -reading, Roller-Smith 'lOSS 

Oil. S(r ;il5o "Petroleum," "Gasoline," "Fur- 
nace." 

Oil and coal fuels — Relative-cost chart 'SSS 

Oll-englne fuel.s. Comparative cost 1115 

Oil, Pine, for li'.tation 21 

Oil properties. Valuation of •930 

Oil, Shale, Gasoline from 530 

Oil shales, Newfoundland 436 

Oils, Flotation ^99 

Oils. Flotation. Anar.,nda 508 

— Mechanism for adding oil •473 

Oils — Flotation hydrocarbons 636 

OJIbway, Mich 413 

Oklahoma gas conservation 537 

Okla. petroleum 80, 4fiS 

Okla. Spelter Co 61. 62, 77, 609 

Okla. zinc and lead 61, 64, 336, 572, 606, 608 

Old Colony Cop. Co. report 822 

Old Dominion, Ariz. 24, 52, 279, 621, 710, 

751, 1133 

— Report 694 

— Water problem ; valve facings 643 

—Air lifts •SSO 

— Pumping costs analyzed ^902 



Page 
Old Eureka. See "Consol. Amador." 

Old Mike mine, S. D 964 

Old Tiffany 32 

Old Trails camp, Ariz '891 

Oliver Alter drums. Rewinding •819 

Oliver Iron Jig. Co. (see also "V. S. Steel 
Corp."). 

— Slack-rope indicator *12 

—Notes 78, 163, 200, 202. 242, 455, 753, 798, 

878, 1093, 1132 

Oila de Oro 119 

Olympia. See "Green Hill-Cleveland." 
Oiiahman Iron Co. ; Ferro mine 163, 622, 711, 

836, 1006, 1093 

Oneco mine, Mich 331 

Oneida mine, Calif 666 

Oneida Stag flotation plant, Ida •HJ 

Onondaga, Colo 242, 1006, 1050 

Onondaga, Mich 331, 1006 

Ontario as mining district 686 

Ontario Bureau of Mines Report t366 

— Parties sent to Nor. Ont 1048 

Ontario compensation 528. 687 

Ontario copper 475, 484 

Ontario gold and silver 475, 483 

Ontario iron 122, 475, 484, 598 

Ontario labor conditions 528 

— -Wage increase, Cobalt 920 

Ontario mine, Ida 177, 331 

Ontario mine, Utah 33, 138, 139, 203, 277, 

278, 281, 334, 416, 668, T12, 837. 923 

Ontario mining in 1915 121 

—Production 475, 483, 484 

Ontario — Origin of nickel-copper deposits ; 

map •Sll 

Ontario ores. Markets for 597 

Ontario platinum discovery 161 

Ontario taxation 453, 620 

Onyx, Chaffee Co., Colo 1006 

Onyx group. Colo S3:i 

Openpit raining accident figures ^635 

Ophlr mine, Ont 33, 334, 1052 

Ophlr Mg. Co., Nev 820 

Ophlr, Mont. See "Butte Central," "Butte 
Detroit." 

Ophlr Range Gold, Colo 7i> 

Oploca Co., Bolivia 175 

Ore. See also "Geology," "Mill," "Crushing, " 
"Flotation," "Roasting," "Bins," "Concen- 
tration" and cross-references. 

Ore buying. South Am 292 

Ore cooler, Hendrle & Bolthoff's "Iron Mask" 397 
Ore dressing. Colloids in 249. 272, •429. 509, 

•681, •763. •890, 990, 1068, 1105 

Ore dropping through 1.135-ft. raise •262 

Ore production, U. S., 1911-1914 128 

Ore, Removing broken, from flat stopes ^395 

Ore samples and their Interpretation ^933 

Ore stealing 199, 537, 709, 750, 1039. 1085 

Oregon gold and silver 43 

Oregon mining in 1915 113 

Orenstein-Arthur Koppel dump car 'lOoS 

Ores from Cobalt. Ont., Metallurgy of 646 

Ores, Metallography applied to 1084 

Ores, Refractory — James' process 1114 

Organ Mt.. N. M 540 

Oriental Con. 164, 334. 456. 500, 668. 698. 

712, 799, 879, 1007. 1052 

Original Amador Co 76,710 

Original Bannack Mg. Co 1051 

Orion M. & M. Co., Ariz ^909 

Orkla Co.'s shaft. Sinking 6o0 

Oro Hondo. S. D 113, 754. 799 

Oro Water. Lt. & Power 76,100 

Orovllle Dredging, Ltd. — Dredging. Colombia 

102, 119, 456, 668. S79 

— Report 9411 

■ — Pato report .*<1."' 

Orphan mine, Ariz 6. 241 

Orr, H. D 2:;7 

Oruro mines. Bolivia 17."> 

Osage, Joplin dist Ulio 

Osaka Zinc Reflning Co l::4 

Osborn. W. X. I'nited Verde Ext 723 

Osborne. A. H.. Death of 237 

Osceola Con., Mich 141, 200, 539, 667, 1134 

— Report «9.{ 

Osceola Mg. Co.. Ida 372 

Oston Leasing, Colo 7.'i2 

Otter River Mg. & Manganese Corp 9(14 

Otto Coking Co 8. 7S 

Ouro Preto City, Brazil ♦7.-i!» 

Ouro Preto Gold Mines 120 

Overlook. Ida 76 

Owens, 'T. M., flotation patents ^22 

Oxides. Reduction of, by hydrogen at high 

temperatures 1074 

Oxyacetylene. See "Welded." 



Faclflc Coast Borax Co 241. 1090 

Pacific Coast Gypsum Co 136 

Pacific Dredging, Calif 666 

Pacific mine, N. M 1094 

Pacific Mineral Products. Calif 76 

Pacific Mines Corp., Calif 1092 

Pacific Portland Cement Co 241. 1005 

Packard, G. A. Gold Lake dist '339 

Packing. Asbestos — "Good.vearlle" 1034 

Packing cabinet, Handy 'OOO 

Padshaw, B. J 2S 

Paints, Lead— British prohibition S.IO 

Palsh. Sir G., on war economics 382.702 

Palladium. Boss mine. Nev 103 

Palllster, H. D. Peculiar magnetic phenom- 
enon '444 

Palmer, Charles S 157 



Page 

Palmer, John. Death of 28 

Palmer, L. A. Oatman dist ^895 

— New strike, Goldstone, Calif ^1040 

Palona G. & S 164, 243, 281, 1052 

Pan-America. See also "South Am.," etc. 
Pan-American Petroleum & Transport Co. 277, 

327, 331, 369, 536 

Pan-American Scientific Congress 23. 25, 154 

— -Report of meeting •289 

—Papers, etc. 197. 291, 292, •297, 301, •302, 

•307, ^315, '321, 329, 343, 349. •385, 448 

Pan grinding in Australia 225 

Pan-shi antimony mines 637 

Panama earthquake danger 529 

— Seismic disturbances 995 

Panama, Keeping out Insects 263 

Panama, aianganese from 500 

Panuclllo. Chile, smelting 187 

Papasslmakes' "Greek Strike'" 121, 243, 1045 

Paper famine, Explosives and 955 

Paper filters. Toughening 781 

Paper pulp, filtration and 781 

Parade, Preparedness, N. Y ^910, 827 

Park City wage Increase 277, 278 

Parkdale dist., Colo 919 

Parker mine, Colo 280 

Parowan, I'tah. Tungsten near 1004 

Parsons, Charles 365 

Parsons, George Klngdon 535 

Patent laws, British 773 

Patent Office reorganization 432 

Patents and extralateral rights 974 

Patents and publication 554 

Patents, Land, Expediting — N. W. Convention 

resolution 724 

Patents, New 24, 156, 238, 368. 410. 495. 569, 

618, B62. 707, 786, 959. 1002, 1045, 1087 

Patino Interests, Bolivia 119, 'ITS 

Pato dredge, Colombia 102, 119, 456, 668 

— Report 815 

Patten, Miss Josephine 874 

Patterson, C. E 273 

Patterson & Nelson, Nev 623 

Patuxent mine, Ida 202 

Paul. H. W. Mining, Japan 133 

Paulsen Ranch, Calif 202 

Pavitt. W. Hesser. Jr 276 

Pay Day mine, Ariz 962 

Pavne, Henry M 494 

Payne. J. H.. Death of 958 

Paystieak. Idiosyncrasies of the, in Yukon.. •889 

Pearce, E. V 927 

Pearce. W. D., Death of 151. 193, 195 

Peat-phosphate fertilizer, Ida.; Minn 528 

Penliale, Col. J. J 1046 

Penn Iron Mg. Co 76 

— Electro-hydraulic shovel •88( 

Penn Mg. Co., Calif 52, 107, 1047, 1090 

Pennsylvania iron ore 1060 

Penn. mine Are. Butte 362. 452, 496, 536, 

580, 619, 754. 1051 

Penn. petroleum 80, 468 

Penn. safety conference 663 

Penn. Smelting Co 660 

Penn. Steel Co 71. 375. 406, 408,502 

Penoles, Cla Min de 17, 58, 164, 389 

Peoples Natural Gas Co 939 

Percy, JI. R. Record tonnage hoisted 17, 360, 

493, 786 

— Leyner vs. piston drill 360 

— Manganese- vs. chrome-steel roll shells 613. 

907. 951 

Perin. Charles P 1130 

Perkins, H. C 918 

Permeability — Slime-cake proporties 1105 

Perry, E. H. Interpretation of assay curves 

for copper drill holes '726 

Perry. 0. B. Yukon Gold report 550 

Perseverance. See "Alaska-Gastineau." 

"Alaska Gold Mines." 

Perth .^mboy tin smelting ^927 

— Briefer mention '25. 67. 487. 492 

Pei-u copper 48. 118. 296. ^846 

Peru mining in 1915 118 

Peru, .Mining industry of; map. etc •845 

— Cerro de Pasco district 'loin 

Peru, quicksilver 540, ^846 

Peru tungsten— La Dura mine 'SM 

Peruvian Potash & Cheni. Cn 278 

Pervell. A. C, Death of 1045 

Pesquiera mine story 273 

Peterson, F. P. Walhalla dist •379 

Peterson, John. Death of 198 

Peterson Lake. Ont 1136 

Petre. R. W. Manganese. S. C '1019 

Petroleum. See also "Oil." 

Petroleum and coal fuels — Relative-cost chart •SSS 

Petroleum and coal origins 103 

Petroleum, Ark., and gas 1092 

Petroleum, Calgary, note 961 

Petroleum, Calif. : 

—Statistics for years SO, 167. 199. 468 

—Monthly statistics. .11. 428. .'593, 882, 952. 1131 

— Independent Producers' figures 795 

— Geology north of Coalinga 104 

— Storms wreck derricks 199. 236, 277, 327, 411 

— Land cases 239, 496 

— Area of proved land 750 

—Various notes 239, 277. 331. 369, 496, 536. 

919. 1047 

Petroleum, Canada 483 

Petroleum distillate and other fuels. Com- 
parative cost of pumping with 1115 

Pctrnloum, Ecuador 343 

Petrnleum, Guatemala, control 352 

Petroleum, Heat values of 1031 

Petroleum. India 137, 720 

Petroleum. Japan 133 



Januarv 1 to June 3(t. 191(5 



THE ENGINEERING & MINING JOL KNAI. 



Pase 

Petroleum, Mexico 284, 808. 882 

Petroleum, Mont., notes 160, 243, 277, 836 

Petroletun, Ont 122. 483 

Petroleum. Peru •846. 847 

Petroleum products mfr. — Bureau of Mines^ 

bulletin *91" 

Petroleum properties. Valuing 'SaO 

Petroleum, Bumania, exports 967 

Petroleum, Russia 126, 1097 

Petroletun. S. D. — Waterton-n 620 

Petroleum— Standard Oil's method 872 

Petroleum. U. S 41, 79 

— By states 80 

Past and future production, b}' states 468 

Petroleum, Venezuela 120, 585 

Pettingell , Frank Herve.v 237 

Phalan Manganese, Nev 964 

Pharmacist mine, Colo 750 

Phelps, C. A 874 

Phelps, C. C. Drill gage '939 

Phelps-Dodge (see also "Copper Queen" and 

other interests by name) 456, 712,871 

^Reports 031, 693 

— Mines acquired. Organ dist 665 

— Tvrone — Ne>v town 871 

— How flotation works *S51, 870, (erratum! 

912, 998 
Philippines dredging 100, 101.102 



Pope, John D 157 , 276 

Porco Tin Mines, Ltd 119 

Porcupine-Crown, Ont 123, 837, 1007 

—Report 821 

Porcupine dist., Mich 370 

Porcupine Premier, Ont 164 

Porcupine-Vipond, Ont. 121, 203, 334, 373, 

799, 923, 964, 1007, 1136 

Porosity — Slime-cake properties 1105 

Porphyry coppers in 1915 742 

Portchester sewage-tunnel driving •523 

Porter, Frederick S 794 

Porter seals for samples •439 

Porterville, Calif., Magneslte near; Porter- 

ville Jlagnesite Co. 75, 162, 202, 452, 49C, 

539, 019, 875, 878 
Portland Canal Tunnels — Cost of crosscut 

adit 987 

Portland-Independence, Colo. 29, 106, 159. 180. 

452, 642, 1090 

— Reports 482, 822 

Portland mine, Dumont, Colo 539 

Portugal, Mineral resources of 815 

Portuguese iron and steel tariff 342 

Potash, Calif., near Kane Springs 1134 

Potash, Canada, regulations 1091 

Pot.ish, Chile — Pintados deposits 118 

Potash from kiln gases. Security Cement 

Lime 



Pase 
Pump, Centrlfug.il, for variable delivery. . ."983 

I»ump, Float conir.jl for "903 

Pump manufacturing;. Rapid, by Lane & Bow- 
ler Co.. for Am. Zinc, L.. & .S. Co 1031 

Pump, Sand, Stripping HiUcrest irm mine 

with '-'H. 215. 369 

Pumping — Air lift for secondary unwaitrini: "1112 
Pumping, I-eadville, Colo. 106, 642, 66,j. S19. 

1110. 1131 
Pumping. Old Dominion — Life of ralTe facings 643 

—Air lifts "859 

— Costs analyzed •902 

Pumping-plant kelp screen. Standard Oil Co., 

Pac. Coast 'SSS 

Pumping with distillate and other fuels. Com- 
parative cost of 1115 

Pumping with water hoists 857 

Pumps, Centrifugal. Roodepoort Deep 124 

Punching machine. Hollow-steel, Cop. Queen •llOl 

Purington. C. W 719, 1046 

Putnam, J. H., & Co 493 

PjTite mining, Ont 598 

Pvrites — Brit, foreign trade 335 

Pyrites Co., Ltd 455 

Pyrites exports, Spanish 755. 1 138 

Pvrites trade, V. S 503 

— With Spain and Portugal 352 



Philippines gold and silver 43. 102 Lime Co. •;••••. ,„^i; 

Philippines photos. 'ISS, •442, •948. •989, •1117 Potash from lava, ^y™'"/ 1020 



lippines 
Phoenix, Calif. 

Phosphate in Wyoming 428 

Phosphate, Peat-, fertilizer, Ida., Minn 528 

Phosphate, V. S., Imports, exports 543 

Phvsician, Plant (poetry; 533 

Pioher Lead Co 76, 584, 665, 920. 966 

Picher. Okla.. rail connection 834 

Piedmont Manganese Corp 1094 

Pilot-Butte. See "Anaconda." 

Pinal Development 538. 1092 

Pine Grove, Calif 162 

Pine oil for flotation 21 

Pinos Altos M. & M 77, 243 

Pioneer Con., Xev 712, 1051 

Pioneer mine, Calif 797 

Pioneer Smelting Co., Ariz 52, 1049, 1132 

Pioneer Tin Mg. Co 128 

Pipe-corrosion prevention 601 

Pipe expansion-bend chart •184. (correction) 572 

Pipe-flow meter, Bailey '1034 

Pipe-line support. Overhead ^478 

Pipe-repairing kinks — Patching split pipe : 

lay tongs •1072 

Pipe roughness — Kutter formula 675 

Pipe-straightening device. Tonop.ih *353 

Pipe. Wood-stave. Continuous wire winding 

for *355 

•941 



Pipes, Stopping leaks in 

Piping — Kutter's formula coefficients 675 

Piping, Flow computer for 565 

Pirsson, L. V. Textbook of Genlogj- t366 

Piston ring. Chalsmlth interlocking •IflSl 

Pitt, Dale L 918 

Pittsburg-Idaho 178 

Pittsburg-SUver Peak: Rawhide. Bacigalupi, 

etc 111. 162. 202, 498. 666, 1093, 1134 

Pittsburgh-Dolores. Nev 77 

Pittshiirgh iron and steel markets. .^45. *47, 71 

Pittsburgh Liberty, Calif 76 

Pittsburgh Steel Ore Co _76 

— Chain grizzly ^599 

Placer gold, Tukon — Idiosyncrasies of pay- 
streak '889 

Placer laws, Tukon — Bench claims ^722 

— Remedies for incongruities •SOe 

— Xew Dominion law needed 1038 

Placer mines. Fatality rate in 641 

Placer mining, Russian gold 363 

Placers, Round Mtn., Nev '856 

Placerville Gold Mg. Co 750 

Planet, etc., mines, Rhodesia 137 

Plate. H. R 617 

Plate. Laboratory electric hot ^1076 

Platinum, Boss mine. Xev 103 

•» Platinum, Brit, embargo on 1000 

Platinum, Canada 484 

Platinum, Colombia 668. 1094 

Platinum in 1915 6, 46 

—Prices •45. 46, 125 

— -Imports and exports 756 

Platinum, Ont.. discovery 161 

Platinum. Oregon, notes 1135 

Platinum-rhodium wire dutiable 1096 

Platinum, Russia 46, 125, 839, 925 

Platinum, Spain — Proving deposit 141 

Platinum vs. gold dishes *"80 

Plattsburg dam failure 1129 

Plenaurum, Ont 1136 

Plumh-bob Illuminator ^223 

Plummer, J. H 276 

Plummer. W. H 748 

Plutus mine. Utah 799 

Plvmouth Con., Calif. 201, 241. 498. 664. 752. 

797, 962 

—Report 905 

— Tube-mill lining •263 

Plvmouth Explor. Co. ; Montezuma mine 159. 

332, 1133 

Pocket dredge, Colombia 119 

Poetry 152, 365. 533, 575,747 

Poisoning, Arsine. Odd case 769 

Poisoning. Cvanide. Slow 141, 444. 698 

Poisoning fl.sh by cyanide 23 

Poisoning, Gas, first aid 901 

Poisoning. Lead 90 

Polglase. .1. H.. Death of 1089 

Pontons, Military use of 1070 



Quain's electric thaw point 776 

Quarry accidents in 1914 176 

Quartzite belt. Black Hills ^770 

Quebec law revision 331 

Quebec ores. Markets for 597 

Quebec production 484, 806 

Queen Mines Corp., B. C 879, 923 

Queen's University, Ont 831 

Queensland production (see also "Australa- 
sia," etc.) 827 

Quicksilver, Ariz. — Cinnabar claims 1005 

(julcksilver — Brit, foreign trade 335 

Quicksilver, Calif 67, 68, 199, 418. 508 

Quicksilver, Calif. . stealing 750 

Quicksilver, Humboldt Co., Nev 836 

Quicksilver in 1915 41, 67 

— Prices and market •45, 68 

— Exports 756 

Quicksilver ore, 1911-1914 128 

Qvilcksilver ores, Concentrating— Calif, study 1033 

Quicksilver, Peru 540, •846, 848 

Quicksilver prices, ctirrent 913 

Quicksilver, Tex 68 

— Discovery in Brewster Co 623 

Quicksilver, Univalent, Sliver separation from 781 

Quincy Mg. Co 141, 200, 922, 1006, 1091 

—Report 735 

Quinn claims, Ont 161 

Quinn, Martin, Death of 330 

(juinton Spelter Co 838. 876 

Quirk, J, Drifting with jackhamers. Prince 

Con 903 

Quirk-Statts, Calif. 581 

Quiruvilca Co., Peru 118 

Quo Vadls, Nev 32 



Potash from seaweed, Calif 162 

Potash, Nevada 331 

Potash, Oregon lakes 113 

Potash, Peru, development 278 

Potash Recovery Co.. Calif 921 

Potash recovery. Riverside plant •390 

Potash salts imports, exports 503. 543 

Potash, Searles Lake, Calif 75, 82, 277 

— Land Office denies patents 149 

Potash, U. S., in 1915 82 

Potash, Utah 82, 115, 140. 281, 373, 709, 875, 

960, 1136 

— In western lake muds 900 

— Parowan-Cedar Cy. discovery 1004 

Potosi mine, Mex 116 

Potosl, Nev Ill 

Powder. See also "Blasting," "Explosive," 
"Du Pont." "Nitrates." 

Powder headache, Preventing 478 

Powder Riv. Dredging Co 101, 113 

— No. 2 dredge photo. •604 

Powdery material. Collecting 357 

Powell, llaj. J. W., monument 558 

Powell's camp, Calif 30 

Power cost chart. Coal and oil fuels '555 

Power, F. Danvers 1088 

Power plant, Chuqulcamata *314 

Power-plant cost. Bay State By. 227. (cor- 
rection) 394 

Power-plant practice. Ariz 53 

Power plant. Wash., D. C 574 

Power supply. Rand mines 124 

Powers Gulch Devel.. Ariz 241 

Pozo mine. Jackhamers at 775 

Practical Mining. Details of t534 

Pratt. Wallace E 748 

Pre-Cambrlan gold fields of central Can 275 

Precious metals. Guarding the 1000 

Precipitate bags. Holder for •526 

Precipitation, Electrolytic copper 55 

Precipitation — Estimating metallic aluminum 

in aluminum dust 813 

Premier Diamond Mg. report 482, 642 

Preparedness. See "War." 

Prescott, Ariz. , customs smeltery 1005 

Prescott, F. B. Misused belt dressing 858 

Presidio Mg. Co 536, 664 

Pressure gage. Mercury ^861 

Pressures, Light. Liquid manometers for... •942 

Price's cage-chairing device •SIS 

Prices for the metals 913 

Prices, Metal — Charts ^44, ^45, ^47, 'Se 

— Geol. Survey spelter price "55 

Prichard formation, Ida lOS 

Prichard. W. A 494 

Primers and misflres. Regarding 12 

Primos companies 75, 104, 105, 106, 159, 664 

Primrose mine. Alaska 30 

Prince Con.. Nev. Ill, 415, 879, 1007, 1094, 1135 

—Drifting with jackhamers 903 

Prindle, Harrison 794 

Pringle, C. A.. Death of 151, •191, 193, 

195, 236 
Pringle. L. B. Rapid analysis 650, (erratum) 781 

Probert, Frank H 831, 1130 

Products Sales Co 412 

Proflt-sharing. lead and copper mining ..447, 612 

Progressive, Ariz 5:^8 

Prohibition 105, 109, 126, IfiO 

Promontory Pt. camp, Utah 114, 70S 

Promoter mine. Ariz 710 

Prospecting, Churn-drill. Morencl, Ariz ^969 

Prospecting on forest reserve 612 

Prospects. Portable mining equipment for..^l025 

Proctractor, Watch face as *395 Rand metallurgy — Review 96, 124 



R. R. R. mine, Ariz 797 

Rabb, E. M 1088 

Rack. Drill-pick, Cop. Queen ^1104 

Radium ore, Colo ISl 

Radium never seen In nature 720 

Radium Ore .\sso., Colo 333 

Radium ore, U. S 12S 

Radium ore, Utah 140 

Radium. Uranium and Vanadium from Camo- 

tlte. Extraction of t366 

Railroad strike, Alaska 362 

Ralls, Rolls for straightening •437 

Rails, Shoe for hauling, in openpit *1071 

Rails, V. S. production S07. 714 

—Alloy-steel rails 850 

Railway congestion. The 701, 739. 747, 1028 

— The reasons 104." 

Railway sub turns. Standard •1029 

Railway transportation. Alaska S47 

Railway traveling in Mex 340 

Railwavs, Mine. Turnouts for •Sie 

Rainbow Mg. Co 113 

Raise, Dropping ore throvigh 1,135-rt *i6i 

Ralcv, Robert J 794 

Ralston Devel. Co 159. 162 

Ralston, O. C. Control of ore sUmes •763. 

•890, 990 

Ralston, W. C 367 

Rambler-Cariboo 268, 269 

Rand. Charles F 276 

Rand. See also "Transvaal," "South Af." 
Rand. Drilling methods, etc., by natives on — 

Photos •825 

Rand earth tremors. Cause of 995 

Rand. Far Eastern, Will Am. capital be at- 
tracted to ? 1124 

Rand. Konomax drill on ^564 



Prospector's experience in Honduras lllS 

Proudfoot flow computer 565 

Providence mine, N. M 243 

Provincla. Ariz 1049 

Publication and patents 554 

Publications, New. See "New." 

Publicitv in technology 273 

Pugsley, F. W 494 

Ptillls. W. K.. Death of 958 

Pulp and metalllcs assays 612 

Pulp. Paper, filtration aid 781 

Pulp sampler. Chlcksan Co.'s automatic •521 



Rand. Miners' phthisis history 936 

Rand mines. Dust allaying In 'lOOS 

Rand mining in 1915 122 

—With charts of costs, returns, etc. ^809 

Rand. Practical Mining on tl2S 

Rand. Slope filling on 266 

Rand — Slope haulage power 221 

Randall's, C. A., rotary-screen ore classifier. .•eSl 

Randfontoin Central 122. S09 

Rare Metals Ore Co 708. 798, 833. 875 

Raritan Copper Co. 51, 92, 104, 861, 362. 537, •724 
— Operating engine-driven generators 730 



THE EXGIXEERING 6- MINING JOURNAL 



Volume 101 



Page 
Rasmussen, C. M. Hoisting-rope question... 699 

— -Record tonnage hoisted 786 

Ration list, Tropical 940 

Rattlesnake Jack, S. D 33, 77, 113, 416, 799 

Raven Cop. See "Anaconda." 
Rawhide. See "Pittsburg-SilTer Peak." 

Ray Con., Ariz 24. 54, 581. 1003 

— Reports 384, 738, 742, 900 

Ray, G. B.. Death of 450 

Ray. Goldfleld, Xer 964 

Ray Hercules Cop., Ariz 454, 710, 797, 962 

Ray-Jefferson, Ida. 31, 107, 499, 539, 711, 

963, 1006 
Raymond, R. M., Columbia's new professor. . 148 
Raymond, E. W. Details of Prac. Mining 

reviewed t534 

Ra.vner. W. H. Tape sag and slope dia- 
grams '776 

Reading, Jlilitary, for civilian engineers 257 

Ready Bullion. See "Alaska — Treadweil 

group." 
Real del Jlonte, Pachuca — Concreting Bar- 
ron shaft •676, 700 

— Big reserve 869 

— Report item 1064 

— Employees leaving Me.xico 1123 

Reason, The (poetry) 152 

Reconstruction. A work of 658 

Bed Monarch, Ida 31, 242 

Red MtiL group, Ala 1060 

Red Mtn. Magnesite, Calif 75 

Bed Beef, Ariz 710 

Red Wing mine, Calif 921 

Bedfield group, Calif 1041 

Bedmayne, Sir R. A. S 872 

Reed Quicksilver mine, Calif 414 

Beese, C. E 958 

Eeeve, Sidney A 918 

Befractory-ore process, James' 1114 

Begrinding at Anaconda '480 

Belifuss, L. A., drilling contest 1112 

Behfuss, L. A. and W. C. Portable equipment 

for prospects •1025 

Beindeer Queen, Ida 76, 711 

Beorganized Booth 373, 661, 964 

Beorganlzed Cracker Jack 623, 922 

Beorganized WTiite Caps 281, 500, 879 

Beports. See also companies by name, "Cost." 

Reports. Offlcial, Notes from 745.955 

Bepublic, I. & S. Co 8, 78,202 

— Standard sub turns ^1029 

— Automatic locomotive gong •lOSl 

Republic mine. Mich 31, 798 

Bequa, M. L., on Standard Oil 872 

Rescue. See "First aid," "Safety." 

Bescue-Eula, Nev 623, 923, 1051 

Besoiling in Australia •529, '111? 

Resoiling with Natoma dredge ^169 

Retort discharging machines 93 

Bererberatory. See "Furnace," etc. 

Beview of mining in 1915 105 



Page 
Robinson, E. F. Military Preparedness and 

the Engineer 1705 

Rochester Hill, Nev., photo !!^657 

Rochester Merger, Nev 878 

Rochester Mines Co., Nev. 77, 111, 164, 203^ 

281, 623, 878, lOOT 

—Mill photo •(i97 

Bochester, Ont 624, 923 

Bochester United. Nev 836 

Rockbridge Manganese, Va 164 

Rocky Mtn. Club dinner •932 

Roessler & Hasslacher Chem. Co 618 

Rogers, Alexander P 157 

Rogers-Brown interest, Cuba. See "CauVo." 
Rognon's gold discovery, Ont. 121, 1004, 

„ „ , l"**. 1136 

Roll frame. Repairing •562 

RoU-shell truing with emery bricks..!!!!!! 691 
Roll shells, Manganese- vs. chrome-steel 613, 

907. 951 

Roller dog for draglines •222 

Roller, Pope, from car wheels !!!!!»1075 

Roller-Smith ohm meter •lOSS 

RollinsviUe tungsten camp. Colo 833 

Roosevelt Drainage Tunnel 107. 180, 242, 372 

411, 795, 878, 1134 
Rope, Cableway, Finding tension on 1111 



Rope, Failing, indicator !^ig6 Sample. Automatic pulp ! ! .Ui 

Rone nnp«:tinn Th,i >i^ictir„T t-nn o i .-. . r ^.:. 3-^* 



—Poisoning fish by cyanide "23 

— Statistics, etc 120 

St. Johns Mines. Calif '.'.'.'.'.'.'.'.'. 75 

St. Joseph Lead Co 59' 60 

— Report ' g^j 

—Methods of rapid analysis "c'oO, (erratum)' 781 

—Matte sintering and double roasting 943 

— Lead-smelting data, Herculaneum 985 

— Lead production ggQ 

— Doe Run receivership suit 920 

St. Nicholas Zinc, N. Y tqo 

St. Paul, Colo laka 

St. Paul Mont. Mg !!!!!!!!'! 77 

Salduro Marsh. L'tah. potash 900 

Salida. See "Ohio & Colo." 

Sailers. E. A. Depreciation +534 

Salitrera. Cia., Chile .. . 245 

Sally, Waters, Wis !.!!!!!!!! !!ll36 

Salt desert. South America ! ! ! •8'*4 

Salt. Hwaiian, production !!!!!!!! 594 

Salt Lake Cy.'s position !!!!!!!!! 160 

Salt Lake Power & Water 'l094 

Salt Lake Stock Exch 412, 497 

Salt mines, Venezuelan "' 933 

Salt, Peru '.'.'.'.'. •846, 847 

120 
173 



Salvador 

Salvador mine. Bolivia 



Rex. Ida 31. 333, 372 

Rex Plaster, Calif. 241 

Rhodesia gold 43, 136, 373, 375 

Rhodesia production, various 373 

Rhodesia mining in 1915 136 

Rice, George S 237 

Bice Lake dist., Man 1091 

Richards, E. B 1130 

Bichards, Fred. Death of 535 

Bichards. J. Adit enlargement and alignment, 

Alaska- Juneau •982 

Richie. A. A. Keyboard method, shaft tim- 
bering •JSS 

— Hanging shooting timbers In shafts ^1071 

Richard, T. A. Flotation Process 1705 

Bicketts, L. D 435. •527, 831 

— Cop. mining and metallurgy. Ariz ."ss 

— Improved mining and metallurgy as aid to 



Rope question. The hoisting., 699 

Bope roller from car wheels •IO'd 

Rope, Slack, indicator !!, •12 

Rope, Wire, Lubrication ! . •858 

Roper, Norman B 367 

Rose, C. A. Metallurgical operations. Chile 

Exploration Co •soi 

Rose Rock M. & M ! . ! ! ! 1051 

Ross, Frank A !!!!!!!! 706 

Rossland. B. C, Geology and Ore Deposits 

„°' tl087 

Rotary-screen ore classifier •691 

Roughness — Better Kutter coefficients 675 

Bound Mtn. Mg. Co 164, 667, 1135 

— Round Mtn. placers •856 

Rowand's flotation machine !.!.!^597 

Rowe mine. Chain grizzly at !!!^599 

Roy & Titcomb's experimental flotation ma- 
chine *Q^1 

Royal Basin. See "Northwestern " 

Royal Cornwall Polytech. Soc 706 

Royal John, N. M ooq 

Ruble M. & M. Co ! ! " ! u'o 

Ruby mine, Silverton. Colo 798, 922 1131 

Ruby mine, Weston Pass. Colo .' . 239 

Ruder. W. E. Annealed-copper brittlcness.! 820 

Ruggles. W. B., Death of 276 

Rumania petroleum exports 967 

Rush, Ark., zinc cUst 485 

— ^'<"f,s •; • '.'.'.'.Yo9, 796 

Russell, James A. 1046 

Russell, William C !!!!!!!!!!! 450 

Russia — Anglo- Am. syndicate buys piatinum- 

gold claims in Urals 1121 

Russia coal and coke !!!!!! 543 

— Spitzbergen coal-fleld purchase report.!!!!! 624 

Russia copper 4g 1-7^ 

Russia — Fell's Spassky stories . . ...'.'.'.'.'.'. . .' 702 

Bussia gold 43' 12.5 

Russia, Gold placer mining *.'.".'. . .' 363 

Russia iron ][] 997 

Bussia — Lead and zinc mining. Siberia 65 

Russia — Lena Goldflelds; Lenskoie Co.. Si- 
beria — Winter mining photos ^44.3 

• — Will dredge gravels ' 719 

— ^'o'ss 125. 668 

Russia manganese industry 894 

—Notes 36. 126 

Ru.'isia. Mining machinery in 7'9 

Russia petroleum 

Bussia platinum 46, 125 



Sampler, Concentrate. 5Iiami ^422 

Sampler, Hamilton automatic ! ! ! ! !^603 

Samples and their interpretation !!!! ^933 

Samples. Porter seals for ! ! ! ! ! ^439 

.Sampling and mapping. Esperanza 551 

Sampling — Churn-drill prospecting. Morenci- 
Methods, drying stove, splitters and mixing 

aprons, etc t^gg 

Sampling device. Tailings, Shaw's.!!!!!!!!! ^223 
Samuel. J. M. Measuring dust losses. Con 

Queen •loei 

San Antonio mill. Mex •299 

San Francisco del Oro 116 

.San Francisco Mint ....369 536 

San .lose mine. Mex *. .".*. . . ' 1^4 

San Juan Cop.. Ariz !!! 1092 

San Poil. Wash.; West Hill Mg.' Co.! !! !!! " 5SS 

Sand. Filling slopes with ' 266 

Sand pump. Stripping Hillrrest iron "mine 

o '"i" •,■•;, '211. 215. 369 

Sandoval. Grate bars at •602 

Santa Barbara mercurv. Peru.... "iJO 

Santa Fe G. & C. Co so' 1% 

— Report ■ ' 4g2 

Santa Gertrudis 281, 500,' 'e'e's'.' 837.' SIS, ' 1052 

Santa Tsabel massacre. . .151. •WO, 195, 236 1045 

Saratoga, Ariz 75 jgg 

Sarton. G. Belgian Scholarship "commit- 
tee DKQ 

Sasco smeltery, Ariz.. ..!'.!.'.!!'..'.!'" ii32"ii33 

Saskatchewan production ..'. . ' 434 

Saskatchewan placer mining.. <na 

Sault Ste. Marie dock ?^; 

Sault Ste. Mane traffic. igj 

Saunders. W. L 270. 27i. 33o'."3'6'o, 661 

— State and aims of A. I. M. E. . 435 

Savanna Cop. Co.: Ohio mine ."si'o «51 

Savannah Kaolin. Ga ' ?b^ 

Su.vapullo. Cia. Mln. de. . . Ji? 

Scaife. C. C. Death of ico 

Scammell, Matthew J tji 

Scheelite. See "Tungsten." 

Schmidt. J. Oxyacetylene vs. arc welding.. 906 

Schneider. William G gij 

Scholarships. Cheniical-englneerinE. . '8'26 869 

Scholarship jCommittee. Belgian ' 658 

.i,:.j -nitation. .Toplin !!!! 834 

..1094 



School children's 

School Property mine. Tenn. 



ation 291 l'"''.s|''> — Siberian industrial bureau and expe 



conserv: 

Ridden. Guy C !!!!!!!! 617 

Bidder Concession, Siberia 65 

Rider. G. S 411 

RIedcr Iron Co ! ! ! ! 1050 

Rifling of diamond-drill cores 902 

Rigg. Gilbert 1001 

— Dissertation on flotation 382 

Right of Way. Ont 582 

Rimini dist.. Mont 919 

Bio Tlnto. Ltd.. report 827 829 

Rising Hope mine, Calif. I59 

Bitiman. W. F 663 

— Gasoline from Petroleum, etc t917 

— Pro.os, In Calif 1047 

Blver ,v (,,ist Nav, Co 938 

Blversii I', rtland Cement Co *390 

Boanokc, M., 202 242 

Roastlii;: .\nnular sintering apparattis. . . . . . .'•526 

Boasting l.lcnri, , Wedge furnace for 718 

Boasting. Doulile. and sintering matte. St 

Jos. Lead Co 943 

Bnastingmalllng of cop. ores In 'fine condi- 
tion— KicpiiiEerKrcJcl-Kuzell ^479 

'!!!!l021 



"-S Schoop's metal-spraying process! 1070 

.126. 1097 Schrader on Oatman geologv 1119 

. 839. 925 Schroeder. F. A .....!!!!!!!!!!!!!!! ! 579 



.332. 371. 



269 



Roasting 

Boasting practice. Zinc— Revle'w 

Boasting — Sintering flotation concentrates. Mt' 



dition 
Russia sodium-nitrate requisition! 

Ru.ssian Empire in 1913 

Rust. W. B 

Ruth mine. Ariz 

Ruth-Hope. B. C 

RutUe. See "Titanium.' 

Ryan, J. D., Statement of 36I 



Sabiwa mine. Rhodesia 

Safeguard setsorews. Dutv to 
Safety. See also "First aid." 

Safety Asso.. .1. A. Holmes 

Safety bureau. Anaconda 

Safety conference. Penn 

Safety — Copper Queen accidents. . '. 

Safety- Don'ts for skinner 

Safety — Failing-rope indicator ... 
Safcty-flrst exhibit. Wash., D C 

Safoty-flrst In lifting .' . 

Safety-flrst magazine. Rand 

Safety gate for cages. Folding. . . 



123 



.Schroedter on steel without manganese 957 

Schurhcrt. C. Textbook of Geology +««« 

Schultz. R. W '"'I's'?' 831 

Schumacher mine. Ont 78, 'l2'l! ■5'8'2'.'624' 712 

Schwab, Charles M 459 

Schwcrin's patents 764. 7'6'6"9'9'»' qqi 

Scott. H. E. \\'here the air goes. . . ' m 

Scranton. Utah 8'3'7' 903 

Scratch Gravel. Mont 499,'622. "922 'll35 

Screen. Kelp. Pumplng-plant ^983 

Screen. Rotary, ore cla.sslfler "•691 

Screen scale. Standard test 1104 

Screw, Straightening long •940 

Seaboard Steel & Manganese Co !!!!!!!! 967 

Porter, for .samples !.' ' "•439 

1, W. Y. Lure of Crlppie'creek 

: .•••• t917 

ke potash. 

......■..'..' 149 

409. 450. 1124 

urnaces ^721 

pper ores 1127 



.Seal: 
Seamai 
Gold 
Searles 



93 



Morgan ,.(,0, 

Roberts. W. Frank ! .' ; ' j:," 

Roble. E. H. Determining dust loss, Cop. 

Bobins. t' m ' 'Field fortlflcatioiii." "sieges" 'a'lid ''"^ 

demolitions •514 530 

Robins tailings conveyors. Chile... •ssg' 1,75 

Robinson, r. steel .shaft timbering.'.'." ' " 



•llll 

. ^393 
. 349 
. 467 
. 932 



Boblnson Deep. Transvaal 
Boblnaon mine. Transvaal. 



122 
..•809, 1065 



Safety pate for shaft 
.Safety In handling expiosivcs. 
Safet.v, — Inspectors' conference 
Safety magazine — "Gold Bar". 
Safety — Slack-rope indicator . 

Safety trolley-wire box •857 

Safety work. Calif. Industrial Accident Comiii ' 
etc. 176. 208. 220, 369, 875, 1028, 1047' 

1130, "l 131 
.Safety work. Cop. Queen.. ro't 

St. Elmo & Mtn. Queen !!!!!!!!!'" 24'' 

St. James mine. .Minn 31 16.3 oflj 

St. .Tohn del Bey— Metallurgy 11, lej 185 



-Land Office denies patent 

Searls. Fred. Jr 

Seasoning reverbcratory fi 
Secondary enrichment of c 
Secrecy. British metallurgi 

Security Cement & Lime Co 455 

Sedimentation and flocciilatlon " '*i29 509 

Segregation In gold buillon ' '1033 

.Selhy Smg. & Lead Co 58 Qo" "9' 387 

Selch. E. potermlnlng alumina In s'lllca'tes"'l076 

Seldovla. Aln.ska. coal mining iso 

Selenium In 1915 'ijjf 

Sells mines, TTtah....33, 114, 164, 334, "l'o"5'2" 1094 

Semple, C. C. SIraighteners •sss .437 

— Steel-collaring machine ' ^984 

Seneca mine, Mich " " 'fis's 79s 

Seneca Blver. 8. C. . 
Seneca -Superior. Ont 
-Cost of silver . . 
— Beport 



•381 



904 



January 1 to June 30, 1916 THE ENGINEERING & MINING JOURNAL 



Separation. See also "Coiu:entiatloii" and 

cross-references. 
Separator, Campbell magnetic, used for flo- 
tation concentrates 551 

Serpek process (see also "Nitrates," "Nitro- 
gen" ) 1082 

Setscrews, Dut.v to safeguard 930 

Settling of slimes (see also "Flotation"; •081, 

•768, *%W. 990 
Seven Troughs Coalition 164, 455, 623, 836, 

922, 1135 

—Report 9(15 

—Mill photo '097 

Seven Troughs Mg. Co 922 

Sewage-tunnel driving '523 

Shaft, Concreting Barron, Pachuca — Squeezed 

shaft •676. -on 

Shaft, Drop, sinking, Cuyuna '404 

Shaft gate. Semiautomatic safety •SSS 

Shaft sinking — Air-lift 'lllS 

Shaft-sinking in Norway 600 

Shaft-sinking methods, Three — Crean Hill, 

Dome and Creighton mines •774 

Shaft-sinking rate on Gogebic ; jackhamer 

drills 816 

Shaft, Sinking Woodbury, Newport Mg. Co.'s ^521 

Shaft timbering. Keyboard method ^438 

Shaft timbering. Steel, Los Ocotcs 17 

Shafts, Butte, Depth of 141 

Shafts, Hanging shooting timbers in 'lO'l 

Shale, Gasoline from 530 

Shales, Oil, Newfoundland 436 

Shamva mine, Rhodesia 137 

Shannon Cop. Co 52, 752,877 

Shasta-Belmont, Calif 201 

Sha.sta Natl. Cop. Co 1092 

Shattuck Ariz 371, 538, 710, 921, 1092 

— Calumet & .Jerome option 877 

— Report 731 

Shaw, A. M. Tailings sampling auger •223 

Shaw, S. F. Data, world's mines 86 

Shearer, B. F.. Death of 748 

Sheave lining. New, Litchfield •SSe 

Sheaves, Idler, Filling blocks for ^901 

Sheda, B. J. Tungsten determination 1076 

Slieldon, G. L. Mex. comple.'jities 1039 

Shell Co 1047 

Sheperdson, J. W 28 

Sherardizlng lO'O 

Sherwood, C. F. Pine oil...,. 21 

Shields, Chas., Death of 198 

Shipbuilding, Copper in 574 

Shipping, British, in 1915 1044 

Ships, Companies chartering 26 

Ships, The scarcity of 913 

Shipsey Mg., Calif 75.201 

Shoe for hauling rails •lO-l 

Shoes, Rubber-soled magazine 355 

Shooting. See also "Blasting," "Explosive." 

Shooting soot from stacks 1071 

Shooting timbers in shafts. Hanging •lO?! 

Shop, Tool-sharpening, Cop. Queen •lOOO 

Shop, Underground blacksmith ^818 

Shovel, Electro-hydraulic, Penn Iron Mg. 

Co.'s '860 

Shovel-mining accident statistics *635 

Shoveling, .Steara, vs. caving 1128 

Shover, R. B 1130 

Shui-ko-shan mine, China 1064 

Slam tungsten discovery 1054 

Siberia. See "Russia." 

Sicilian sulphur. See "Sulphur." 

Sidney Point, Calif 921 

Slebenthal, C. E. Joplin ore deposits 102 

Siebert, F. A., Death of 794 

Sieges, field fortiflcations, etc •514,532 

Sierra Buttes, Calif 498 

Sierra Nevada, Nev 32 

Sierra Nev. Con., Ida 994 

Signal, Visible and audible 'I!?!? 

Signals, Whistles as warning 
Silicates, Determining alumin; 
Sill & 

Silver, Alaska 

Silver assays— Effect of borax in matte fu- 
sion •«« 

Silver, Australasia 127, 714,827 

Silver. Bawdwin mines, Burma 20 

Silver Bell, Colo 581 

Silver, Bolivia 1"4 

Silver, Brit. Col 236. 268, 483 

Silver, Calif 43, 199 

Silver, Canada 483, 871 

Silver Cell group. N. M 32. 500,799 

Silver, Chief mine. Colo 333, 499 

Silver. China— Melting coins 1009 

Silver Cy., N. M., folio 880 

Silver cost. Seneca-Superior 151 

Silver Fortune group, Ida 161 

Silver Hoard, B. C 582 

Silver, .Tapan 133 

Silver King mine, Ariz 1005 

Silver King Coalition, Utah 20, 33, 77, 114, 

115. 139, 369, 453. 580, 751, 87C, 974 
Silver King Con., Utah 164, 277, 278. 373, 453, 

664, 879, 923, 964, 1052, 1136 

— Report 945 

Silver-lead blast furnaces, Mechanical feed 

iiiK of — v. S. Smg, 
Silver-lead smelteries. 



Page 

Silver ores. Metallurgy of, from Cobalt U46 

Silver ores. Metallurgy of native. S. W. Chi- 
huahua '297 

Silver, Peru '846 

Sliver producers — Table of outputs and capi- 
talization 8"! 

Silver refining. Electrolytic, Effects of addi- 
tion agents In 1075 

Silver-refilning process, Thum '77:1 



Page 

Snake Creek tunnel 139, 281. 373.837 

Snake Range tung.sten dlst 1004 

Snelllng. W. 0., and tamping 560 

Snow. H. S 1130 

SnowsUdes, Colo 199. 331 

Snowstorm mine, Ida. — Photo '988 

Snowstorm Mg. Co. ; Banner & Bangle. Mont. 798 

Snyder. B. M 579 

Society of Auto. Engineers 595 



Silver, 



Rhodesia '.'.'.'.'.'.'.'.. 373 Society of Chemical Industrj' 27, 330, 425. 958 



781 



860 



.1076 



Silver separation from univalent mercury.. 

Silver Shield. Utah 799.83' 

Silver. Slocan, Saving 

Silver, United Kingdom, coinage 881 

Silver, U. S 41 

— By states 43 

—Coin held Jan. 1 245 

—Ore, 1911-1914 128 

Silver used by "movies" 956 

Silver. Utah 43. 115. 140 

Silverspur, Furnace lining at 267 

Simpson, W. E 1088 

Singewald, J. T., Jr. Mining In Cuba. . .•587. '605 

— Mining industry of Brazil •759 

— Mining industry of Peni ^845 

— Cerro de Pasco district •lOlS 

Sintering and double roasting, Matte, St. 

Jos. Lead Co 943 

Sintering apparatus. Annular ^526 

Sintering flotation concentrates, Mt. Morgan ; 

pots used •1032 

Sioux Con., Utah 754. 799,879 

Siskiyou Syndicate, Calif 31, 75 

Skidoo Mines, Calif 75 

Skiff, Frederick J. V 157 

Skinner, Don'ts for the 943 

Skinner, T. M., Jr 494 

Skinner. W. R. Mining Manual t705 

Skuilbreaker, Internatl. smeltery ^422 

Slack-rope indicator •IS 

Slag, Decrease in copper content of, at De- 
troit plant 1033 

Slag piles. Bonne Terre, Smelting 1091 

Slate and dike analysis 433 (erratum) 592 

Slate production, U. S 855 

Sleeping sickness. Death by 1045 

Slide rule and flow computer, Proudf oot . . . 565 

Slimes agitator, Devereux propeller 823 

— Power for agitators 1118 

Slimes, Colloidal, and colloids. .249, 272, ^429, 509 

— Rate of slimes settling ^681 

—Control of ore slimes ^763, •890, 990 

— Properties of slime cakes 1068, 1105 

Slocan district operations •463 

Slocan silver and copper, Saving 860 

Slocan Star, B. C 269.582 

Smeltery. See also "Furnace," "Converter." 
"Roasting," "Electric." "Crucible," metals 
and companies by name, etc. 

Smeltery, Braden Cop. Co ^315 

Smeltery, Bunker Hill & Sullivan ^868 

Smeltery, Cop. Cliff. — Determining dust loss ^505 

— -Metallurgy, ores from Cobalt 646 

Smeltery, Cop. Queen, Measuring dust losses •lOOl 

Smeltery — Dust collection 357 

Smeltery, East Helena, impvts 1114 

Smeltery fume bags, Bryant's method of shak- 
ing, by comp. air 185 

Smeltery, Internatl., Miami ^421, ^866 

—Concentrate and calcine cars ^563 

Smeltery smoke, Calif 107, ^385, 1047. 1090 

Smeltery smoke — Cottrell process at Miami 

•389, ^423 

Smeltery smoke — Field's process 76 

Smeltery smoke — Recent progress In elect 

precipitation 

Smeltery smoke — Review of 1915 

Smeltery smoke, Utah ^S^ 920 

Smeltery, Washoe, plan and flow sheet 
Smelteries, etc.--;Maps aiid statistical tables 

•50, 51,(52} •57,(S$), 62, •OS, 66, 259, 609 
Smelting charge^-tfdvnnce. Ariz 751 



Socorro M. & M. Co 112, 243, 540, 1094 

Sodium nitrate requisitioned, Bussia 1010 

Sodium nitroprusside for volumetric coppers. . 327 

Sodium, Oregon lakes 113 

Sodium salts Imports, exports 503,543 

Sohnlein, M. G. F. Bolivian mining •173 

Solar observations. Form of calculation of.. 941 

Somers, G. E., Death of 28 

Sons of Gwalia practice 224, 225, 263.356 

.Soot from stacks. Shooting 1071 

South Africa. See also "Transvaal," "Rand," 
"Rhodesia." 

.South Af.. American capitalists look to 616 

South Af. diamonds 124, 132, 482, 642 

South Af. mill photos., etc •264. •265 

South Af . tin 67 

South Af., Tungsten in 254 

South America. See also "Pan-Am." and 

countries, metals and companies by name. 
South Am., Buying and selling non-ferrous 

metals in 292 

South Am. Cop. Syndicate 119 

South Am. "dollar exchange" 531 

South Am. Elec. Smg. Co 487 

South Am. gold 43 

South Am. in 1915 118, ^173 

South Am. mining means and adjuncts — 
Llamas ; Casapalca smeltery : Cerro de Pas- 
co photos., salt desert and volcano. . .•782. ^824 
South and Central Am. — Economic vagaries ; 

export taxes, etc 363 

—Note 174 

— Taxing unworked mineral lands.. 4'28. 448. 769 

South Banner. Calif 621. 752. 797 

South Carolina — Manganese in •lOW 

South Car.— WalhaUa dist •379 

South Dakota — Black Hills gold-bearing iron- 

quartz-tremolite belt •770 

South Dak. gold and silver 43 

South Dak. mining in 1915 113 

— Mineral output 436 

South Dak. petroleum drilling 020 

South Eureka, Calif 162, 279, 877, 1133 

South Hecia, Utah 33, 114, 373, 456. 879, 

1007, 1052, 1094, 1136 

—Report— Note 500 

South Hecia Extension 334 

South Lake, Mich 51, 141, 200, 373, 753 

— Report 905 

South Mtn., Ida 963 

South Utah 114, 138, 416, 1136 

Southern Aluminium ("o. See "Aluminum Co. 
of Am." 

Southern Belle, Calif 877 

Southern Electro Chemical Co 149. 448. 1083 

Southern Eureka, Calif 371 

Southern Pacific 239. 496 

Southern Sierra Power Co 496 

Southern Zinc mines. Tenn 623 

Southwestern Mine Safety Asso. — Flrst-ald 

contest changes 636 

Southwestern Mines, Nev 754 

Southwestern New Mex. mine 1052 

Spagnoli, D. B., Death of ._.._. 4.^0 

Spain coal 715. T.'i'* 

Spain copper 48. 7'>'' 

Spain iron 9:>: 

Spain. Mineral exports from 7ri."i. 11 > 

Spain, Platinum in . . IfJ 

Spain pyrites trade :t52, 755 

Spanish-Am. Iron Co '587 

Sparkler, Kan 76 

- - ■ ■ • 't>l 



s, ueierraining aiuimiiu m »"■" om;uj"n™ HntT St ln<. T.enrt Co at Her- Spassky region. Stories about. 

Sill ■■ \fl ^™„,„"i,,V, ' ■ qor, Spearman, C. Rotarv-screen ore classifier. . .•691 

Alaska 43,115 P"""!™"' . •. ,•■,■■•,•,•■•■■•■,:■■ i\t Sneddinir J. " 



Co.'s. etc •SSS SmHh^ 

Vo. Am, 



Ledge, Colo, 
■-market booms 
' market, prices, 



— Current situation 

Silver metallurgy — Review- 
Silver, Ont 



76 

872 

nt — Review 44. 

•45, 46 
.615. 829. 913, 954 



-Matte sintering and double roasting 943 

Smelting flotation concentrates ^479 

Smelting — Mt. Morgan report 724 

— Chrome-ore tapping blocks 778 

— Sintering flotation concentrates •1032 

Smelting native silver ores, Batopllas ^299 

Smelting operations. Canada Cop. Corp., 

Greenwood, B. C 1074 

Smelting practice. Cop., in 191 
Smelting practice. Lead 

Smelting practice. Zinc, in 1915 92 

Smelting situation, Ariz 1132 

Smelting tin, Perth Amboy 25, 67. 487, 492, *9i' 

Smink, F. C 4.''>0 

Smith, Charles H lOSS 

Smith, E. A. Cappelen 'SIS, ^321 

Smith, J. E. Concreting Barron shaft. Pa- 
chuca ^676, 700 

Smith, L. P.. Death of 

Smith. M. B., Death of 

Smith, R. F. C.Tr ami tipple ^182 

-Transfer truck iinil chairs •1074 

Smith, R. W. Flotation replaces cyanide ^142 

Smith-Lnbine, Ont 243, 500, 1007. 1052 

bismuth refining 356. 778 

Smoke farming gains prestige around New 

York 445 

Smoke, Smeltery. See also "Smeltery." 
Smoke precipitation. Electrical, Recent prog- 
ress In 'SSS 

Smoke-stack. See "Stack." 

Smuggler-Union. Colo 106, l.'SO, 581,711 

Snake & Opportunity, N. M 500. 540,754 



Spedding. J. F. Filling blocks for Idler 

wheels '901 

Speel River Project. Alaska 136 

Speis mine, Mich 163.202 

Speller, F. M. Preventing pipe corrosion 601 

Spelling, Simplified, In A. I. M. E 445 

Spelter. See also "Zinc." 

Spelter, Gallium recovery from 197. 720. 937 

,„ ,_,.. .,„ Spelter, Japan 133.134,458 

\^ Jgjj ,ij Spelter market and prices, former years '44. 



•47, 61, 611 

— Geol. Survey price computation 755 

Spelter. Netherlands 5S4 

Spelter situatiim, current 531, 745, 913. 1043 

Spelter statistics for 1915 606 

Spelter supply, Forthcoming 196 

""" Spence, C. E. Oil shales, N. F I:f6 

-nn Sperr. J. D. Tom-Reed-Gold Road dlst •I 

,',.<, — "Conversational geology" nt Caiman 1119 

„,.« Spider. Walei^-Flotatlon •852, (erratum) ... 912 

loJ Spllsliury, E. G 409 

Splrlet roasting furnace 1023 

Spitzbergen coal fields 624 

Spokane, Electrol.vtlc zinc plant 11S2 

Spokane Mining Men's Club 617 

Spreader, Furnace-charging. MIdvale •SSS 

Springer and Mathewson. Calif 1092 

Springer. Lamb & White. Nev 964 

Springfield Tunnel, Calif 922 

Sinlngs Mines, Ltd 123. 1124, 112.^. 

Squire, N. H. Preventing powder headache.. 478 

Stack. Concrete. Baltic mill 'llie 

Stacks. Lightning protection for 10S2 

"Stacks" or "chimneys" 956 



THE ENGIXEERING & MINING JOURNAL 



Volume 101 



stacks. Shooting soot from If'l 

Star Canon Fuel Co Sjl 

Stakle, Charles 5c^9 

StaU Bros., Calif 'J> 

Stamp mill. Con. Langlaagte *264 

Stamp milling, Transvaal 1-^ 

Stamp practice. Sons of Gwalia, West Aus- 
tralia 2-4 

Stamps, Chilean mills vs 1^ 

SUndard mine, Ida. See "Tederal Mg. & 

Standard Oil Co., Calif v!?^2' **^' 

Standard Oil Co. — Gasoline prices 792. lOSo. 

— As conserrationist 

— Pumping-plant kelp screen . . 
Standard Silver-Lead, B. C. 26; 



st; 



'gss 

!69. 270, 

416. 1136 

. yw]\ '463, 466 

Standard "Suiphur" Co ^W 

Slander. H. J *?4 

— Interfacial tension in flotation ^•6 

Stanford I'niv. teaching flotation 330 

Star Antimony, Ida 3' - 

Starr King. Calif 241 

State geological and mining officials 104 

State Line, Joplin dist 1050 

Statute of Limitations. Calif 199 

Slaver, W. H 1130 

Steam-flow meter, Bailey *10J4 

Steam shoveling. See "Shoveling," ■■Strip- 
ping." 
Steel. See also ■"Iron," ■■Drill." 

Steel and Cast Iron. Metallography of t917 

Steel — Armor-plate nonsense 613, 746 

Steel. Austria-Hungarj- "57 

Steel-collaring machine '984 

Steel consolidations (see also proper names) 406 

Steel, German, without manganese 957 

Steel In 1915 — Review 69 

Steel, Manganese, at St. .John del Rev 185 

Steel. Manganese — Shrinkage, etc 1034 

Steel. Openhearth, High sulphur does not 

injure — Carnegie Co. studies 595 

Steel-rail production 807, 714 

— Allov-slecl rails S50 

Steel-roU shells. Manganese vs. chrome.. 613, 951 

—Crusher plates 907 

Steel. Tempering drill 744 

Steel-trade conditions 329 

Steel trade. Wages In 235 

—Notes 166, 200, 746. 757 

Steel — Tungsten scarcity : use of molybdenum 1027 

Steele, Heath 579 

Steele. Sanford H 409 

Steelite as gas neutraliTer 601 

Steel's. Donald, jig for gold dredge •692 

Steels. Invar and Related Xickel 7807 

Steese. B. C MSS 

Steiner. C. A.. Death of 409 

Stenger. Edward L 1046 

Stephens. George B 617 

Stephenson. T. L., Death of 409 

Sterling. Robert 7nr, 

Stevens, Frank G 918 

Stevens. T. B. Sons of Gwalia practice 224. 

225, 263, 356 

Stevenson mine, Minn 372 

Steveson. Tiinmas. Death of 579 

Stewart. .1. B. Tempering drill steel 744 

Stewart, Leighton 237 

Stewart Mg. Co.. Ida 333, 415, 539, 994. 1134 

Stines, Norman C 157 

Stock fraud prevention. Mont 412, 795 

Stock selling laws, Calif 29. 452, 536 

Stock lip. Copper, miscarried 273 

Stockholder has fat chance 493 

Stockholders' liability case. Calif 277 

Stockholders' right to samples 352 

Stocks, Auction sales of 408. 449, 533 

Stocks in Hnggin estate 575 

Stocks. Industrial. Earnings on 749 

Stocks, Investigating no-par 24 

Stocks, Mining. N. T. exchanges, in 1913... 80 

Stocks. The copper 407 

Stoddard Mines Co.. Ariz 434, 1005 

Stoddard Milling. Ariz 621 

Stock. H. H 367 

Slope fllling. See "Filling." 

Stnpe haulages. Compressed air or elcclrlclly 

in 221 

Slopes, rial. Removing broken ore from : a 

nr '395 

.Slniii;: Tl.ih Cop. Co *216 

Slor.i: .r explosives 349 

Stote-l'.'^- . E T 450 

Stott.M;.'. Mo 77 

Stove f.r s.uniile drving •970 

Stovel. r n 706 

Stralghtenint' machines, Tonopah •SSS. •IS" 

Slranahan. J. L., Death of 1130 

Stratton's Independence (see also "■Portland") 

— Report 482 

Street. A. L. H. I.«Bal notes 352. 549. 598, 

675, 810. 930, 974. 981. 1028. 1042, 1067, 1104 

Stringer district, Calif 30 

Stripping HlUcresl iron mine with aand pump 

•211. 215, .-;n9 

Stripping method. New. MeaabI 261 

Stripping vs. caving 112S 

Stromberg. M. Russian manganese 894 

Slruthcrs. Joseph 1001 

Sub turns. Standard •1029 

Subway cave-Ins. N. Y. Cy 873 

Success mine, Ida. 31, 333, 372, 499, 7.53. 

836. 922 
Success mine, Ont 203. 1052 



Sudburj- district. Ont 597, 686 

— Origin of copper-nickel deposits; map •SIX 

Sulman's slimes treatment 992 

Sulphide Corp. — Flotation plant 231 

— Report 398 

— Central Zinc Co. purchase 1095 

— Progress since war began 1121 

Sulphur, High, does .not injure openhearth 

steel 595 

Sulphur imports and exports 503 

Sulphur industry in 1915 55 

Sulphur, Italy in 1914 762 

— SiciUan in Feb. 1916 957 

Sulphur, Japan 133. 134 

Sulphur, Midwest Company, Wyo 1136 

Sulphur mines development, Tex 623 

Sulphur-mining patent. Frasch 439 

Sulphur refinery, Freeport, Tex 923 

"Sulphur subdivision" lots. Selling 916 

Sulphur, Tex., development note 456 

Sulphur. L'nion. Company. .26. 55, 747, 915. 916 

Sulphuric-acid constant-flow device '1029 

Sulphuric acid from blende roasting 1024 

Sulphuric-acid manufacture. New method of 10 

Sulphuric-acid patents. Contact 209 

Sulphuric-acid plant, Braden *318 

Sulphuric-acid plant. Garfield 497 

Sulphuric-acid prices, British 724 

.Sulphuric-acid production 609,952 

Sult.in mine. Nev 32, 77. 1007 

Sulzer. Charies X 1130 

Sumatra, (Jold mine in 799 

Summer Lake development 113 

SummerviUe. Calif 371. 752 

Sunflower Cinnabar. Ariz 75 

Sunnyside mine, Colo 76. ISO 

Sunrise, Wyo., photo 'ISS 

Sunset mine, Ida 202 

Sunset SI. & D.. Nev 77 

— Mine and mill — Costs, etc 520 

Sunset & Independence. Ariz 962 

Superior mine, Mich 200 

Superior & Best., Ariz 666 

—Report 903 

Superstition, Ariz 75 

Suppes. M. M., Death of 663 

Surprise mine, B. C 269.484 

Survev, Coast & Geod., exhibit 23, Centen- 
nial 702. 901 

Survey, Geological (see also statistics under 
names of products) : 

—Alaska in 1915 115 

— Cerbat and Black Mlns., Ariz 11 

— Chromic iron ore 808 

— Columbus, N. M.. region map 957 

— Copper statistics did exist 272 

-^Cottonwood-Am. Fork region 160. 432. 709. 

796. 1132 

-Economic geological bulletins 102 

. — Gasoline from shale 530 

— Letters answered last year 636 

— Maps. New 724 

-Phosphate in Wyoming 428 

— Potash in l"lah muds 900 

— Potash from Wyoming lava 1020 

— Radium never seen in nature 720 

— Silver Cy.. N. M.. folio 8S9 

— Speller price in 1915 755 

Surveying — Compass changes 901 

Surveying — Form of calculation of solar ob- 
servations 941 

Surveying — Slagnelic phenomenon ^444 

Surveying — Plumb-bob illuminator *223 

Surveying — Sag and slope diagrams for steel 

tape ^776 

Siurveying — Target for determining azimuth. .•fiOl 

Surveys. Slate Geol. — Officials 104 

Sutherland. T. F. Ont. as mining dist 6S6 

Sutro Bros. & Co 494 

Swaren. W. Erosion by water •372 

Swart. W. G 157 

Swastika mine. Ont 334 

Swastika Mines. Ltd.. Ont 164 

Sweden elec. smelting 23. 998 

Sweden iron and steel 997. looo 

.Sweden. Kiruna iron ores 103 

Sweenev. Charies. Death of 1046 

.Sweet, .T. E.. Death of 91S 

Sweetser. Ralph H 617 

Swiss mountain cableway •lOl 

Symmes, WTiitman 1130 

Symons disk crushers. Inspiration's ^866 

Symons, S. W. Drilling methods in driving 

6-ft. tunnel ^523 

Syndicate Mg. Co.. Philippines •989. •IIU 

T 

Tacoma Exploration Co 794 

Tailings-disposal conveyors. Chile •SSS. 572 

Tailings-reclaiming dredge. C. & H •ISS 

Talllngs-safflpling auger. Shaw's *223 

Taku-Alaska 135 

Tamani Mg. Co 296 

Tamarack, Mich. 140. 200. 278, 582, 667. 709, 

869. 1050, 1134 

—Report 944 

Tamarack & Custer. Ida *9%%, 999, 1093 

Tamping, Advantages of 12 

Tamping In Treadwell mines 560 

Tape. Steel. Sag and slope diagrams for •776 
Tapping blast furnaces by electricity fiors, 

6flS, 931 

Tapping blocks. Chrome-ore 7TS 

Tar. Coal, and Its products '7 

Tarantula mine. Calif. 1093 

Target for determinioK azimuth •OOl 



Page 
Tariff — Appraisement of imported zinc ore.. 1086 

Tariff classification, zinc dross 722 

Tariff commission. To create 869 

Tariff — Molybdenite free 337 

Tariff, Platinum-rhodium wire 1096 

Tariff. Portugese iron and steel 342 

Tariff. Timgsien-ore. asked 833 

Tariff — Villa zinc-ore duties 1059 

Tariff, Zinc-ore, wanted 920 

Tasmania production (see also ■■Australasia," 

etc.) 1000 

Tax, Canadian, on profits.. 413, 486. 490, 920. 961 
Tax decision — Ore reserve exhaustion not al- 
lowed for 487 

Tax, Honduras inactivity 428. 448, 76!i 

Taxation, Mich 200. 920. 961 

Taxation, Minn 109, 161. Ifl4.>! 

Taxation, New Mex 112 

Taxation, Ont 453, 620 

Taxation. Wis 66 

Taxes, Export. South Am 174.363 

Taxes, Mexican 187, 789.827 

—Notes 278. 751. 1091 

— Villa zinc-ore duties 1059 

Tavlor. Charles 706 

Taylor. Knox 706 

Techatticup Syndicate. Nev 77 

Technical literature. Filing "84 

Technical literature. Things in, that are not 

so 364 

Technology, The new •1077 

Tect Hughes. Ont 78, 243, 456, 754 

Tecopa mine. Calif 1090 

Teddv Bear mine. Calif 241 

Teknik Club of Denver 367 

Teleplione — Phantom wire system 827 

Temiscaming & H. B. report, etc 481. 871 

Temiskaming. Ont 33, 500,871 

Tempering drill steel "44 

Tennessee C. L & R. R 8. 7S 

Tenn. Cop. Co 52, 243, 582, 799 

— Report 805 

Tenn. in 1915 IK; 

Tenn. iron ore IOHm 

Tenn. metal miners' examination 13. 2M" 

Tenn. mine, Ariz 6, 835, 962, 1049. WM 

Tenn. zinc 6i'S 

Tennis in HoIIinger report 911^ 

Terra Maria. Calif 581 

■■Territorial Enterprise" discontinued 10S5 

Test screen scale. Standard 1104 

Tetrahedrite. Cripple Creek 873 

Texada Island t917 

Texas petroleum 80, 468 

Texas quicksilver P8 

Texas Steel Co 1052 

Teziutlan furnace-tapping method 698, 951 

— Electrolhermic zinc smelling 1080 

Tharsis S. & C. Co. report 862 

Thaw point. Electric. Quain's 776 

Thawing kettle. Home-made *222 

Thayer, B. B. Copper and zinc. Mont 50 

Thiele. Ludwig A 409 

Thistle-Etna, Rhodesia 137 

Thomas. C. A. Liibecker excavator •1057 

Thomas. George G 831 

Thomas Iron Co 71. 337, 418 

Thomas, W. R.. Death of 794 

Thompson. Alfred 1038, 1039 

Thompson. Charles F 1088 

Thompson Falls Power case 412 

Thompson, J. W. Abstracts of Current De- 
cisions t917 

Thompson, T. W 198 

Thompson. W. B.. Dinner to •gs" 

Thorkildsen & Bierce. .\riz 73 

Three Forks Cop. Jig. Co 798 

Three Kings Mg. Co 139, 243, 1052 

Thum. E. E. Lifting converter •Sge 

Thum silver-refining process ^773 

TIcrra del Fucgo dredging 403 

Tigre mine. Mex .33. 161.413 

Timber— Miners' use of cedar In N. W 984 

Timber Butte 110.160 

Timbering methods. C. & A •545. •OSl. 658 

Timbering. Shaft. Keyboard method ^438 

Timbering. Steel shaft, Los Ocofes 17 

Timbering. 1"lah Cop. Co •216 

Timbers, .'hooting. Hanging In shafts ^1071 

Time-sludv prohibition. Govt 792 

Times mine, Ariz 898, 962. 1049 

Timlskamlng. See "Temiskaming," "■Temis- 
caming." 

Tin, Alaska 101.115 

Tin. Australasia 67. 128.827 

— Cock's Pioneer operation. Vict ^347 

Tin. Banka 67.965 

Tin. Bolivia 67. 119. 'US. 282.800 

—Proposals for smelteries 25. 33, 119. 164. 

174. 487 
— Things in technical literature that are not 

so 364 

Tin. Eleclrol.vtlc, refining, by Whitehead's 

method 357 

Tin In 1913 — Smelting plans: statistics 67 

Tin, Malaya 67,244 

Tin market and prices •IS, •47. 06 

Tin smelting. Perth Amboy •92" 

—Briefer mention 25. 67. 487.492 

Tin smelling. Proposed electric 487 

Tin. S. D 436 

Tin Slocks visible Dec. 31 204 

Tin. Straits 244 

Tin. Tran.svaal 124 

Tin. fnlted Kingdom 66, 67, 335, 347. 1109 

Tin. r. S. — Imports and exports 446 

—Ore 128 



.uuiarv 1 to June 30, 1916 THE ENGINEERING .'r MINING JOURNAL 



Page 

Tin. Workl statistics 67 

Tintic Milling Co. 77, nH. Wi. 7.')1, 833, 

1007, 1052 

Tintic Tunnel Co 29 

Tintic wage increase 278 

Tioga mine, Minn 372, 798, 836, 1050 

Tip Top. Ariz 454. 68" 

Tipple, Rolling side-dump 'ISS 

Tirrill equalizing gas machine '564 

Titanium. High, products from ilnienite 357 

Titanium ore in 1914 128 

Output and mining in 1915 176 

Titrating. Elimination of personal equation in 563 

Tohev, C. E 409 

Tobin. .1. .T.. Death of 28 

Tocopiila, Chile, mining 259 

Todd. R. B. Nev. Packard mill ._. '247 

Tofo iron deposits 53, 118, 869 

Togo Co., Mont 'i'il 

Toiima Mg. Co 119 

Tolstoi Creek, Alaska, strike 83o 

Toluol. See also under "Benzol." 

Toluol. Coal-tar product •" 

Tom Reed-Gold Road dist. (see also "Oat- 

— Map' of claims *4 

Tom Reed mine, Ariz. *1, 5, 162, 371, i52, 

877, »S95, 961, 1049, 1089, 1119, 1133 
Tonihov Gold, Colo. 76, 96, 106. 162. 180. 372, 

539, 711. 878, 1093 

—Report 481 

— Mill interior photo *228 

— Mercurv pressure gage •861 

Tonge. Alfred J IJ!?^ 

Tongs for brass mf r 'a^S 

Tongs, Lay, for pipe •1072 

Tonkin mines invite Am. capital 994 

Tonnesen's hammer-drill mounting *437 

Tonopah Belmont 164, 203, 281, 455, 623. 837, 

871, 1051 

— Straightening machines 353, 437 

— Steel-collaring machine *984 

—Automatic car return • 'lllj 

Tonopah Bonanza 455, 923 

Tonopah Extension 32, 164, 373, 415, 540, 623, 

667, 83", 1051 

Tonopah Midway 623, 1094 

Tonopah Mg. Co 281. 455, 871, 923, 1051 

—Report • ■ -862 

- -Straightening machines *353, •437 

Tonopah Placers Co 101, 1050 

Tool board. Convenient ' *185 

Tool-sharpening shop. Cop. Queen •1099 

Top-slice and caving system, Mitchell (Calu- 
met & Ariz.) *545, 658 

Torreon. Cia. Met. de 52, 58 

Tough-Oakes, Ont. 78, 121, 164, 281, 373, 624, 

1007, 1136 

— Cvanide mill 95 

— Rot^iry-screen ore classifier ^691 

Track sub turns. Standard •1029 

Tracks. Aline, Turnouts for ^816 

Tractor. Yuba, Hauling Calif, lead ores with •554 

Tracy, W. E 28 

—His death 409 

Trade. Foreign. See also "United States 
and other countries, metals, etc. 

Trade. Foreign, Increase in 1044 

Traffic conditions (see also "Freight") — Im- 
proved 1664 

Tramway — Cable ferry, Gila Riv ^189 

Tramway — Finding tension on cahleway rope 1111 
Tramway — Passenger cableway, Swiss moun- 
tains *401 

Tramways, Aerial, Cost of operating and main- 
taining various ■ ■ 986 

Transfer truck and chairs •1074 

Transportation in Alaska 347 

Transvaal. See also "Rand," "South Af." 

Transv:ial Con. Land & E 124 

Transvaal — Cvaniding antimonial ores 224 

Transvaal gold 43, 122, 166 

Transvaal mine. Mex 1007 

Transvaal raining in 1915 122, '809 

Treadwell mines. See "Alaska." 

Treadwell, .1. T., Death of 494 

Treasurer mine. Calif 752 

Tremnlite belt. Black Hills '770 

Trenches. Military. Lecture on •SH, 532 

Trespass. Waiver of 549 

Tntlu-ufv. Ont 456. 754, 923, 1136 

Tnijiiin Ranch tungsten milling •717 

Tri-lliilliun, N. M 203 

Triniourclain. Sec "Copper Range." 

Trinidad in 1915 •''5 

Trinity Asbestos. Calif 75, 202 

Trinity Con.. Calif 202 

Trinity Development, Calif 1650 

Tn.jan. S. D 33, 113 

Trollev-wire box. Safety ^857 

TriiUhiillan. Elec. smelting 23, 998 

Tropic. Mont. See "Anaconda." 

Tropical ration list 940 

Tropics. Engineer in the 938 

Troy mining dist., Mont 331 

Truck. See "Motor," "Tractor." 

Tube-mill liners. Using old 185 

Tulie-mill lining, Another '224 

Tube-mill lining, Plymouth *2I)3 

Tube-mill practice. Anaconda '480 

Tul:c nulls. Installing ^777 

Tubcrrulnsis, Calif 875 

Till.. 1. uliisis and dust. Rand 936, •1065 

Tur,i,ii mine. Ariz.- 581 

Tulii. Mg. Co 496, 878 

I 111 I. II See also companies, etc., by name. 
Tmi^i.M, Alaska 620 



Page 

Tungsten and tungsten steel— Scarcity ; •»«.,. - 

of molybdenum 1"-' - 

Tungsten, Argentina f"* - 

!^S":..'':'"^"''.'.'^^:.-.---9«:'96i;io« : 

— High assay. Powers fiulch 241 _ 

Tungsten, Au.stralasia V. -'-■ ' i n^ j " 

Tungsten, BoUvia ■ •l''^- 1»|4 

Tungsten, Burma, development •;•»•„„• - 

Tunlsten, Calif., -tes m, m 411 J9. 960,^^^^ - 

Tungsten, Colo. 106, 1^1. «|.,"«i„«f*i„^«''ll31 [ 

— Snowslide discloses ore 331 

— Discovery from locomotive ooi 

—Price figures in lawsuit li-j' 

Tungsten, Determination of lO''] 

Tungsten King Mg., Ariz Ij^'J - 

Tungsten market in 1915 i" - 

—In 1916 — Declining tendency • ■ • • ^vii _ 

Tungsten Mines, Ariz 16-. f^ - 

Tungsten, Mo., concentrated... "» 

Tungsten, Nev.— Snake Range dist 1004 

Tungsten-ore price schedule. .........••■•• -^Ja 

Tungsten-ore stealing. . .199, 709, 750, 1039, 1085 - 

Tung.sten-ore taritT asked....... ^f - 

Tungsten ores. Milling of, Colo < i ' - 

Tungsten, Peru— La Dura mine .. .. J&» - 

Tungsten scarcity, Gt. Brit Ia3, lo^i 

Tungsten, Siam, discovery l"54 

Tungsten, South Africa iiVViV 799 " 

Tungsten, S. D - -, 113. 436, .99 . 

Tungsten supply. Steel maker s - J-^o - 

Tungsten, Unfused— Correcting porosity. ....10.0 

Tungsten, U. S., ore l-». ^2* - 

Tungsten, Uses of ^J" 

Tungsten, Utah •■■• ■ "" 

Tungstic-acid rafr., Formen plant a^a 

Tungstonia camp, Nev.. ............■■•■•■■ »-" 

Tunnel, Drilling methods in driving 6-rt. sew- 
age, Portcliester, N. T •.•,••,•■■ " ' 

Tunnel enlargement and alignment, Alaska- ^^^ - 

TumieT'in Catskiil Aaueduct, Bypass around - 

leaky ''" " 

Tunnels, ' Portland Canal— Cost of crosscut - 

.•rtit *'° ' 

Tuolumne,' "Mont. 202, 243, 455, 582, 667^^922,^^^^ 

Turbo-blower efficiencies '255 

Turnouts for mine tracks "^ 

Tuscumbia Mg. Co., Ida "O^ ■ 

Tuscumbia M. & M. Co lo^» 

Twin Buttes, Ariz ^J; 

Tyee Cop. Co =- 

Tyrone, N. M.— New town ;:-\-\y; 

Tyrrell, J. B. Pre-Cambnan gold fields of 

Central Canada fiB 

— Canadian mineral resources iio» 

U 

Ubehebe lead ores. Trucking *554 

Uglow, M. L ;•■ -.V •.••■.■■ ■ C05 

Unger. J. S. Sulphur in openhearth steel .^.. 595 
Union Basin Mg. Co.; Golconda mine 6, i5. 

Oil, 11)49 

Union Carbide Co 832 

^SroS'Sr^""' 29°"3'2, •7'5'0'.'75i; ■833',' 's's^'. iSJ 

^rsg;il:^"?S!!&^?!^::i62;'^'io« 

Union Hill, Trinity Co., Calif 202, 1050 

tinion Jack mine. So. Af ^-J 

Union Cop. L. & M. report VnVinor. 

Union mine, Ida ■ ■ " ■ oVi' ?M «B 

Union Oil Co ••2(7 331, 369, 536 

Union Sulphur Co 26, 55, 747, 91^, 916 

United Cop. Co ;;• v -^r V»Vi-?' j«' 

united Eastern, Anz. '^l^^^^l^lXt',;^^^ 

United Engineering Soc. Library report 384 

United Globe report ■ • ■ -695 

United Gold Mines, Colo a.'-. ' i.>i 

United Kingdom : 
See also "War." 

—"Americanizing British mines xiS' V?o 

—Ammonium sulphate ■ ■ • • • • ■ • :■]•"■ "^ 

—Coal and coke 284, 543, 840, 1109 

— Collieries, Women employed In ._. Ii5 

—Copper prices •44, 4;^, 49 

— Copper, London standard 44i , 4»i 

— Copper purchasing regulations ;44 

— Copper situation •, i„„ 

— Guarding the precious metals 1000 

— Information, Interchange of i91 

— Infusorial earth. Supply of 1018 

— Iron, steel, ore: 

Pig production 808, |57, 99i 

Steel production 840 

Iron from native ore in 1914 34i 

Ore in 1915 1109 

Foreign trade 284, 419 

Change in statistics collection It a 

— Lead paint prohibition proposed ..850 

— Lead prices *''"•, !5? 

— London Metal Exchange 104.1 

—Manganese-ore imports ..•• 2M 

Metal triuilng restriction 491, 501, (>,:.> 

^>tot:illMr'j\-, standing comm. on 1088 

- M.iii i"ivi;:ii trade 335 

_,ji„,, I ,1 I ,, .III, lion in 1014 (metals) 347 

— Miii,i,,l |,i,,,hi, luin in 1915 (ores, etc.). ..1109 

— Mliui.s .iiul \\w war "69 

— Milling men at front 932 

— Patent laws ",3 

— (JulcksUver prices 68 



Page 

Shipping In 1915 1»« 

-Silver coinage "•} 

-Spelter prices •' 

-Sulphuric-acid prices ••••••;;••■.;.• ■•„•/." ■,;5J 

-Tin and ore 66, 67, 3:u 34;, 1109 

-Tungsten situation • \ai, WZi 

-Zinc Corp., Hlrsch loses appeal against, 

g|(. 148, 1U93 

-Zliic-'export allowed. Broken Hill. . .;. . . . . . 128 

-Zinc-smelting affairs 145, l.i3, ^*' jjj^'jj,,, 

nited Smg. & Aluminum Co 388 

nited States (productions and other mat- 
See also "Survey, Geological," "Bureau of 
Mines " "Bureau of Labor Statistics.' 
"Bureau of Standards," "War topics," etc. 

-Accidents, Quarry, in 1914 ;,■ • VoV -A 

-Aluminum .■..•■• 41- »-»• 'J* 

-Ammonium sulphate imports, exports s« 

-Antimony market, etc.. In 1915 <» 

Ore in 1915 556 

Ore in 1913-14 J2« 

Imports, exports in 1915 ' j"" 

—Arsenic imports and exports o«-i 

—Bismuth ^-T 

—Cement, Portland ■ ■ • •'' » 

—Chemicals and raw materials, ImporU and ^ 

exports 

Fertilizing chemicals 543 

— Oirome iron ore production »"» 

—Chrome ore Imports, exports 5" J 

—Coal and coke 41, 16. 

Exports and imports ■•• ?"i 

-Copper ■ ii 

By states ,1? 

Ore, 1911-1914 J?* 

Mine, smeltery, refinery map 'oO 

Production and stocks — Our toUls.... .. 2il 

Imports and exports 446, 2.5, 91. 

—Copper sulphate 41, .14 

— Ferromanganese JJ 

—Flotation concentrates. No. Am *»- 

—Flotation, Map showing use of •»» 

—Foreign trade. Increase in 1044 

—Gasoline production 404 

—Gold " 

By states 1-J 

Coinage • Jr 

Amount held Jan. 1 fOj 

Ore, 1911-1914 128 

— Iron, steel, ore •,- °? 

Pig ;41, .0 

Pig. revised ; by states 513, 997 

Rails 807, 714,850 

Ore .:'.......;; 41, 69, 128, 167 

Ore revised : by states 1060 

Lake rail ore shipments , „■ 5„? 

Foreign trade 418, 419,503 

—Iron and ore supplies V, «« 

—Lead 41, 'se 

Imports and exports 446, 826. 957. 1126 

Ore, 1911-1914 12? 

Mine, smeltery, refinery map -S. 

Outputs of certain companies 660 

—Lead, White 5,, .14 

—Lime .46 

— Magnesite Imports and exports i • VcV eno 

— Manganese ore 128. .84, 503 

— Metal Imports and exports in 1915 446, o6 

— Metallic products. Secondary, exports and _ 

imports ' Jj 

—Molybdenum • ■ Yr 

Nickel 1. ' ■* 

—Ore production, 1911-1914 128 

—Petroleum 41, .9 

By states J" 

Past and future production, by states... 468 

— Phosphate imports and exports -543 

—Platinum 6, 46. .n6 

— Potash production begun »- 

—Potash salts imports, exports „2a' 211 

— Pyrites imports and exports 352, 50X 

—Quicksilver <!. »'■ '56 

Ore. 1911-1914 128 

— Selenium 'JJ 

—Silver *1 

By stales « 

Coin hold .Tan. 1 JJS 

Ore. 1911-1914 128 

—Silver producers— Statistical table 8.1 

— Slate production SS."* 

—Spelter statistics for 1915, revised 606 

—Sulphur -55, 50S 

— Sulphuric acid 609, 95'. 

—Tin *' • i":*! 

Imports and exports 44b 

— Titanium 'lo U*) 

—Tungsten ore 128, 2.i4 

— Vanadium and uranium ore 128 

—Zinc 41, 196 

By stjites 61 

Revised statistics 606 

Jline, smeltery, refinery map '63, 259 

Imports and exports, zinc and ore 446. 

611. 826. 957. 1126 

Ore producUon, 1911-1914 12S 

Importation of ore 954 

Dust 611 

Dust, oxide and dross exports and Im- 
ports 714 

r. S. Borax Co 922 

IT. S. Coast & Geod. Surv. exhibit 23. Cen- 
tennial "02. 901 

U. S. Cop. Co 112 

II. S. Dept. of Agriculture — Sulphuric-acid 
mfg. method lo 



22; 



THE ENGINEERING & MINING JOURNAL 



Volume 101 



Page 

f. S. Gold Corp 76.499 

U. S. Gypsum Co 203, 581 

r. S. Manganese Corp 1138 

r. S. Metals Kef. Co., Chrome, X. J. 51, 

52, 92, 104 

— Fire refining of bismuth 356,778 

U. S. Red. & Ref. Co 239, 411. 795, 960 

U. S. .Smg., Ref. & Mg. Co. (see also "Mam- 
moth Cop.," "Centennial-Eureka." "Gold 
Road," "Tenn. mine." "Needles," "Alaska- 
Ebner." "Real del Monte") : 

— Report 106S 

— Outlook — Statement 181 

— Lead production 660 

— Mechanical feeding as applied to silver-lead 

Mast furnaces *8S5 

— Notes, statistics, etc. 33, 52. 58, 77, 83, 93, 
114, 138, 139, 140, 153, 240, 414, 497, 610, 

642, 665, 871, 920. 921, 1093 
U. S. Steel Corp. (see also "Oliver." "Illi- 
nois." "Minn.") : 

— Report for 1915 570 

^Quarterly reports 274, 801 

— Monthly reports of orders 166, 167, 375. 376, 

542, 714. 925, 1096, 1097 

— Benzol plants 8, 78 

— Edgar Zinc Co. : Donora smeltery, etc. 62, 

77, 93. 196, 502, 606, 609. 610, 879, 1082 

— Natl. Tube plant, Gary 670 

— Wage advances 166, 200, 235, 746, 757. 882 

— Number of employees 1085 

— Impvts. planned — Coke ovens, etc 245 

— Sulphur in openhearth steel 595 

— Bessemer & Lake Erie traffic 616 

— Blast-furnare tapping by electricity 603, 

698, 951 
— Various notes, etc. 26, 70, 110. 161. 337, 

542, 616. 661. 665. 671. 104.S 

United States Tungsten Corp Ill, 837, 1004 

U. S. Vanadium Devef 279, 1092 

U. S. Zinc Co 62, 93, 609, 835.838 

United Verde. Ariz... 24. 52. 53, 90, 106. 538, 876 
I'nited Verde Extension 30, 106. 454. 538. 876 

877, 1092 

— Account of developments 723 

United Western, .\riz. 710, 752, 877. •896, 

897 899 
United Zinc Smelting Corp. (see also "Kene- 

flck") 789, 1024 

Universal Portland Cement 76,455 

Uranium ore. See "Radium." 

Uruguay, Coinage in 35 

Uruguay metric law — Catalogs 959 

Uruguay Mineral Report ..j'oh 

Uruguay mining in 1915 120 

Utah Antimony Co * * 1094 

Utah Apex 77, 114. 203. 240. 497, 923, 1094 

— Reports 373, 790 

Utah arsenic II5 

Utah Chemical Co. ; Gt. Salt Lake potash' 82, 

T., ,, , .. , 1*». 9S0 

Utah coal and coke X60 

Utah Con '. .".'.VlV, 240 

— Report 945 

Utah copper 48," 115, 140 

Utah Cop. Co. 77, 114, 139, 240. 334, 369, 500, 

876, 923, 1052, 1094, 1132 

— Statement for 1915 416 

— Annual report 73.3, 742 

— Quarterly reports .428,' 900 

— Dividend gl4 

— Underground mining methods ...!!!!!!!!,"! '216 

— To build leaching plant 701 

T'tah— Cottonwood-Am. Fork region 160, 432, 

709, 796, 1132 

Utah gold and silver 43, 115, 140 

Utah Iron-ore Investigation .'.... .'ll36 

T'tah land opening, Sevier Co 875 

T'tah lead and zinc 11.5, 140'.' 1090 

Utah Leasing Co 77. 114, 138,416 

Utah Metal & Tunnel 114. 139, 240, 243, 281 

334. 837. 1052 

Utah Minerals Concent 29, 243,410 

T'tah mines whose dividends have equaled cap- 
ital 9P,n 

U'tah mining in 1915 I14, i.-jg 

TTtah Ore Concentrating Co 114.138 

Utah Ore Sampling Co 1132 

Utah ore deposits. Origin of lb" 

Utah potash 82, 115, 140, 281, 373, '7'o'9', 

875, 1136 

— In western lake mud« 900 

— Parowan-Cedar Cy. discovery 1004 

Utah Potash Co 82 

Utah srli.,ol lands question .1090 

Utah Sorv of Engineers 832 

UUh spr.lt.T gflg 

Utah, Inlv. of 617, 664. 7'4'8. 832 

Ltca mn,-. Calif 30, 162. 279. 666 

Utlca Mines Co.. B. C . om 

Uwarra mine. N. C .■..........'.'.'.'. 920 



Van-Roi Mg. Co.— Mill •464 

— Neulraiizer for dynamite gases 601 

— Fire protection for mill 602 

— Truing roll shells with emery 091 

Van B.vn Deep 123, 1124 

Vanadium in Michigan 786 

Vanadium ore, U. S 128 

Vanadium, Peru .•846, 848 

Vargas mines, Colombia 296 

Vasco Mg. Co 245, 499, 752 

Venezuela developments 119, .583 

Venezuela magnesite .' 158 

Venezuelan salt mines 933 

Ventilating long drift, Morris-Llovd mine of 

Cleveland-Cliffs 222 

Ventilation and gasoline motors 645 

Verde Comb., Ariz 751 

Vermilion Con., Minn. — Manganese ore 163, 

(correction) 4og 

Victor Power & Mg. Co. ; Midas mine, etc. 31, 

"6, 498, 538 
A ictoria. See also "Australasia," "Australia." 

Victoria mine, Mich 200. 256. 753 

— Report 90.5 

Victoria mine, Nev ', '. ni 

Villa. See "Mexico." 

A'Ulage Deep, Transvaal 1065 

Village Main Reef 122, 809. 996. 1114 



Vindicator Con. ; Golden Cycle 

180, 199, 411, 452, 499, 664, 667, 798, 836, 1090 

—Report 731 

— Power for slimes agitators 

— Negotiations for merger 

Vinegar Hill Zinc 

Vipond. See "Porcupine Vipond." 

— Report — Note 

Virgin and Valentine, Calif 

Virginia Cy. mine, Colo 

Virginia dist., Minn., labor trouble; 

Virginia Iron, C. & C. Co 

Virginia iron ore 

Virginia Smelting Co 

— Chloridizini 



106, 159. 



1118 

1131 

8, 416. 1136 



.1132 



Page 
— Military reading for civilian engineers... 257 

— Miners in the trenches 490 

— Motor trucks for border •995 

— Naval Consulting Board ; another call to 

engineer toward preparedness 270, 271, 360, 435 
— New Year's greeting to English tunneling 

engineers 57.f; 

— N. Y. Engineers' Training Battalion! !!!! 'l042 
— Nitrate plant. Govt., etc. 619, 655. 872. 875. 

1064. 1082 
— Preparedness. Military, and the Engineer. fJOS 
— Preparedness, Military : metal economy, etc. 659 

— Preparedness parade, N. Y •910, 827 

— Reprint replaces lost periodical 27 

— Soldiers, Employment of returned 49o 

— Transvaal war taxation 123 

— Utah industrial preparedness 240, 795 

— Zinc affairs, British and Australian 128, 

145, 153, 447, 743, 1104, 1120 
— Zinc-ore contract, Australian-German, deci- 
sion, etc 148. 1095 

— Zinc smelting, war time 828 

Wardle, L. P., Death of 831 

Warford coal-dust burner •sos 

Warner, R. K. Plumb-bob illuminator ^223 

Wasatch Mines, Utah 33, 1007 

Wasatch Ozokerite 334 

Wash house for miners '. 477 

Washburne, Chester W 748 

Washington, D. C, power plant 574 

Wash, mine, Colo 963, 109" 

Wash, mine, Mex I0(t7 

Wash. State copper '.]'.'. 4v 

Wash. State gold and silver .'..'. 4 

Wash. Water Power Co 4 1 :_• 

Washoe. "See Anaconda." 

Wasley, W. A 

Wasp No. 2, S. D. ; 



Waste cars. Dumping. 
Watch face as protractor. 



113, 203, 416, 436, 

799. 837, 9i!4 

•nil 

..•39 



..611, 623 

1060 

51. 582 

Virginirst^Sl c'jfrp.'.'.''.'".''.'."".. !•.'""* '^ S?}"' Pooling gas-engine, in cyanide plant ^8 

Vivian mine. Ariz '..'.'.'.'.'.'. 898 ^^ "?''''. low— Better Kutter's formula coeffl 

Vogelstoin, L. Buying and selling non-ferious 

metals in South Am 292 

Vogelstein smeltery. Van Buren, Ark. 



Volcano. South American ^824 

Volker, H. J. Samples and their interjire- 

tation ^933 

Von Polenz, Baron '.'..'.'.'.'.'.'.'. 617 

Von Uslar's divining-rod work ..'. 651 

Voorhees. P. A. Rewinding filter drums. . ^8 19 

Vorck, Charles R njgj 

Vulcan Detinning Co. report !!.!!!! 568 

Vulcan Engineering Sales Co.'s hammer ^565 



. 128 
1134 



Vulcan mine, Queensland.. 

Vulcan M. & S. Co., Colo 1090 

W 

Wade, John F 28 

Wages. See "Labor." 

Wagner, F. H. Cleaning of Blast-Furnace 
Gases 1534 

Wah Chang M. & S. Co '. .'."7'9', "638. 742 

Wahling, W. H., Kan 76 

Wallialla district, S. C •379 

Walker, John, discovery, Ariz .'!.*!' 962 

Walker Cop. Mg.. Calif 76, 797" 921 

Walker, Myron R gig 

Wallace, R. C "1130 

Wallace, Thos.. Death of '.'.'" igg 

Wallace, W. J., Death of. .151, •igi, 193, 195, 236 

Wallaroo & Moonta 99, 127, 830, 1121 

— Report 945 

Wallower-Cumberland mill fire .!io64 1050 

Wanakah Mg. Co 52. 106. 180 

War topics. European and U. S. (see also 

"Mexico") : 
— Acetate of lime. Gray, under Brit, restric- 
tions 1123 

— Ariz. Volunteers '.'.'.'.'.'. .1004 

— Armor-platc nonsense '.'o'l's' 746 

— Australian Metal Exchange '....' 215 

— Australian shell-making offer 010 

— Bawdwin mines situation -"n 

—Belgian relief: Hoover's work. 

— Belgian Scholarship Committee ,. 

— Brit, metal-trading restriction 401, 501 6-'5 

— Brit, miners and war ' 709 

—Brit, mining men at front '.'.'.'." 93'' 

—Brit, precious-metal embargoes looo West Dome Con.. Ont 

— Canadian nickel situation 370. 418, 447 497 

533. 580. 597. 620. 628. 665." 709 

—Canadian tax 413, 486, 490, 920,961 

— Cartridge-brass manufacture •975 

—Military Engineering, Chicago .lolnt Coniiii" 
■"" "" Lecture on pontons 1070 



872 



Water consumption per capita 51:; 

Water, Cooli ' ' 

Water flow- 

cients ',','"", 67.". 

Water-flow computer and slide rule. Proud- 
foot 56-, 

Water hoists. Use of [[] §57 

Water. Nozzle eroded by .•572 

Water power and atmospheric nitrogen 149 

448. 619. 055. 872. 875. 1064. 'lOS2 

Water power idle. Burma 8'"i 

Water problem. Old Dominion 643, •859, •902 

Water-rights litigation. Calif 7511 

Water. Sea, for concentration 789 

Water sterilization. Calcium hypochlorite 562 

Water s.vstem, Mine-plant 1073 

Waterman, A. D., Death of 494 

Waterman, F. W " 874 

Watson. C. R. Death of 151, 'lOl. l'9'2 

195. 236 

Watson. M. S. Railway traveling, Mex 340 

Watson, T. L. Engineering Geology t366 

Watts. 0. P. Rapid nickel-plating 820 

Watts steel plant sale oil 

Wayland, Kan . "' 7; 

"Web of Steel." The +79" 

Webb, C. N. Getting out the ore '.'. 36,'; 

Webb C.V.. Mo., activity 200 

Webster, R. J 1988 

Wedge dust-collecting diamber ! .' ! •6411 

Wedge furnace for blende roasting .'.'. 718 

Wedge furnaces, Miami •42'! 

Weed, L. B "looi 

Weed. Walter Harvey 700 

Weedon elec. zinc refinery 25/ 78 94 

Weedon mine. Que '. . . '597 

Weinbrcn. M. Removing broken ore froni 

flat stopes •39,ri 

Welded, Oxyacetylenc-. casing for deep weil 

Peoples Nat. Gas. Co 939 

Welding. Elec, for mine repairs 744 

Welding, 0.\-.vacetylcne. Braden 230 

Welding, Oxyacetylenc vs. arc ",*.' 9O6 

Welfa re work. Copper Queen ....!. 723 

Well ca.slng. Oxyaoetylcne-welded '. 939 

Wellington Mines Co ISO. •185, 798. 963', 'inou 

—Operating cost 594 

West Africa gold 43 37,5 

West Australia. See "Australasia." ■•Aus- 
tralia." 



33. 



874 

— Copper after the wa 

—Copper purchasing rules, British '.'.'.'" 24 

— Copper sales. Recent 719 74, 

— Diamond trade restrictions ' i-j 

— Economic loss-Views of Palsh and Whli" 



West End Con., Nev 
West Hill Mg. Co. ; 
West Hunter. Ida. . . 
West Kootenav Co.. 
West Norfolk." Vn.. 
We.st Va. pclnilcum. 
Western Cliom. Mfg. 
Western .'Hctals Co. ; 



San Poll mine. 



334. 540. 582. 
668, 964, 1007, 1136 
.32, 456 



582 

539 

413 

smelting 51 

80. 468 

7fi 

Merchants' Finance Co. 



Jr"!'; "■-,"■ ,''"'" »n>cltlng, Perth Amboy. 
Valdez Creek placer mines 



328. 702 



Valdor Gold Mg. Co 

Valley Pipe Line. Calif '.'.', 

Valuation of oil properties... 

Valve facings. Life of 

Valve. Pour-way. Crane Co."«."."." 

Van Arsdale. G. D. How flotation works' '' 

870. (erratum) 

Van Campen. F. R 

Van Dyck. E. 8. Sunset pro'p'e'rty ! ! .' .' 
Van Hl»e, Charles R . 



— Engineers. Reserve Corps of 042 

— Gold and silver movement ' 4.? 

— Indu.strial Preparedness Conmi.. Mining 

members of 929 

— loplin Industrial preparedness.....! 901 

—Machine guns. Govt, bu.vs three " 991) 

—Manganese supply of (iermanv "" 957 

—Military engineering lectures at E'lglneerlng 

Societies building, N. Y. 306, 362, 44(1, 1000 

Held fortifications, sieges and demoll- Wheeler's, F. 

tlons •,r,j 4 r^.^2 

Ite.solutlons on preparedness .'.' '721 

Engineers Training Battalion !!l(l42 



106 

41.'; 

.1134 



Western Mg. Co. . Colo 

Western Union Mg. Co 

Western Zinc .Mg. & Red. Co '. . 

Western Zinc Oxide Co ...106 750 

Westlnghouse h'avy-duly induction inoto'r. . .•10.54 

Westinghou.se ml-ie. S. D 984 

We.ston. E. M. Kononiax drill ". ^564 

Weston Pass. Colo., j'iO 

Welllaufer Lorrain report 48» 

—Note ■ 964 

Wharton Steel Co 71,' '407' 418 

Crown King tunnel. Ariz.' 

620, 1092 

S. E. Mo. lead diat 59 

360, 786 



Wheeler. H 

- -Hccord tcmiiaEe hoisted 



.I.uniary I to June 30, 1916 



THE ENGINEERING & MINING JOURNAL 



PaKe 

Whu'Ier. R. Slimes agitator 823 

Wheels, Car, bolted together as cable i-ollei- 'in'r) 

Wheels. Car; flanges 982 

Wli.ler, A. S. Antimony, China *«i1 

Whiiiiwell mill, Australia 765 

Wliistles as warning signals 437 

While Caps reorganized. See "Reorganized." 

While Cat Tungsten %i 

Wliltc, D. Coal and petroleum 103 

Wliile, Edwin E 1046 

— Slate and dike analysis 433, (erratum) . . 592 

Wliitc, H., on economic loss by war 328 

White, I. C, on Mex. Petroleum Co.'s gusher 808 

While, .loseph H 450 

Wliile lead and oxides 57, 714 

While Oaks Mines Con 243, 540 

Wliite Pine. See "Calumet & Hecla." 

While Pine Extension 51, 141, 370, 711, 1050, 1091 

White, R. T 617 

Wiiitchead's method, electrolytic tin refining. . 357 

Whitewater mine, B. C 269 

Whiting, S. R., Death of 28 

Wliitney, W. R 1088 

Wick, Henry, Death of 28 

Wlik, Hugh B 409 

Wickersliam. J., on mining law 405 

Wickes-Corbin dist. activity 1047 

Wiggin, A. E. Flotation, Anaconda •469, *480, 

508, 562 

Wilbert mine, Ida 178 

Wile Elec. Furnace Co 487 

Wiitlev-table decks. Repairing •1114 

Wilkerson, Fred D 579 

Wilkins, H. A. J 237 

Wlllard, Calif 1005, 1049, 1131 

William, W. E 918 

Williams, Chas. F 1001 

Williams. P. Age and experience vs. youtii 

and education 1081 

Williams, John 367 

Williiims Tungsten, Ariz 454, 961, 1005 

Wi limit, H. C ST4 

WINliIre Bishop Creek mine 107, 1003 

Wil.snn, George J 958 

Wilson Pine Oil test 21 

Wingtleld, George 680 

Winnemucca Mtn., Nev 203, 280 

Winona Cop. Co 200, 278, 372, 415, 922 

— Report 732 

Wiutersteen, W. S., Death of 958 

Wire s.vstem. The phantom 827 

Wisconsin iron-ore production 1060 

—Wis. Oeol. Survey studies 1136 

W'is. zinc 65, 608 

Wis. Zinc Co... 65, 66, 78, 164. 66S. .S37. 1136 

W'is. zinc smelteries — Table 66 

Witherbee-Sherman Co 113 

— Divining rods at mines 651 

Witherspoon, T. C. Treating wounds 225 

Wittich, L. I. Media mill for low-grade zinc 

■ ire ^441 

— \ew Cranhy concentrator ^557 

Wittsladt, A. ('admiuni iirecipitation 865 

Wohhvill giild-rcHning iinice.ss •773 

Wolf Tiuigue ore milling *717 

Hamiiler ground vein opened 1006 

-.Market price in suit 1131 

Wolfahrt plant, Murex process at 765 

Wciinin, H. M 157, 198, 220, 369 

Wolfram. See "Tungsten" and proper names. 

Wolframite Gold M. & M., Colo 664 

Wolframite mine, Colo 1131 

Wolftone mine, Colo 833 

Wolverine mine, Mich.... 200, 487, 622, 753, 1050 

Women in Brit, collieries 175 

Wood flotation machine *175 

Wood flour in dynamite 827 

Wood. Homer 680 

W'ood-stave pipe. Continuous wire winding for •355 

Woon. Warren 706 

Woodbrldge, D. E 157 



Page 

Woodbury shaft. Sinking •521 

Woodward Iron Co 8, 78 

Wookey, S. A 535 

Worden, E. P 535 

Workman, Mark 276 

Workmen's compensation. See "Compensation." 
World productions. See metaLs, countries, 
etc., by name. 

World's principal mines. Data of 86 

Wounds, Treatment of 225 

Wright, Louis A 157 

Wright, W. H 494 

Wrigley Exploration, Ariz 660 

Wyatt, Francis, Death of 450 

Wyoming iron ore 1060 

Wyoming lava. Potash from 1020 

Wyoming petroleum 80. 468 

Wyoming, Phosphate in 428 

Y 

Yacht "Cyprus," Cruise of '1040 

Yaney & Enloe, Calif 201 

Yaney & Mclver, Calif 877 

Y^ankee Boy, Ida 499 

Y'ankee, Utah 114, 164, 334, 624, 879 

Y'eatman, P. Copper in Chile 53 

— Mine at Chuquicamata •307 

Yellow Aster, Calif 332, 877, 1005, 10.50 

Yellow Bird mine, Colo 664 

Yellow Jacket, Nev., flre 1007, 1024 

Y'ellow Pine, Colo 31 

Y'ellow Pine, Nev 32, 963 

— Mill report 778 

Yensen's pure-Iron production 179 

Young America, Calif 76 

Y'oung, E. L., Death of 579 

Young, Hayes W 831 

Y'oungstown Sheet & Tube Co. 35, 71, 166. 

337, 406, 754, 757 

— Labor troubles 155, 167, 925 

Y'uba Consol. 100, 107. 199, 539, 019. 655. 644 

— Launch of No. 15 dredge •949 

Yuba Leasing & Dev.. Nev 77, 327 

Y'uba tractor. Hauling Calif, lead ores with •Ssi 

Y'ucca Tungsten, Ariz 30, 621,961 

Y'ukon-Alaska Trust 530, 1024 

Yukon dredging in 1915 101 

Yukon Gold Co. — Dredging and hvdraulicking 

in 1915 550 

— No. 9 steel dredge '. *146 

—Note 101 

—Guggenheim dredges, Calif. 100, 107, 199, 

379, 5.50, 962 

Yukon — Idiosyncrasies of paystreak •889 

Yukon laws — Bench claims *722 

— Remedies for incongruities of placer regu- 
lations •806 

— New Dominion law needed 1038 

Yukon, Liibecker excavator in ^1057 

Yukon production 484 



Zalinski, E. K. I'lah mining Ill.s 

Zarunia dist., Ecuador 344 

Zcigler, W. L. Repairing Wilfley-table decks '1114 

Zcila mine, Calif 30 

Zellweger furnace improvement 93 

Zenith Chrome Mg. Co 1133 

Zenith Furnace Co 8, 78, 280, 836 

- -Blast-furnace record ^722 

Zeppelins. Alloys used in 938 

Ziegel, H. Metallurgical Analy.sis t366 

-His method of titration 563 

Zinc. See also "Spelter." 

Zinc and cadmium. Volumetric determination 

of 1075 

Zinc and Lead Deposits of Joplln Region, 

Origin of t360 

Zinc, Arkansas 608 

—Rush district, etc 485, 709, 751,796 

Zinc, Australia 127, 608 

—Broken Hill Asso. Smelters 127, 144. 799. 1120 
— Broken Hill export allowed 128 



Pace 

— German ore contract decUion, etc. 148, 

1095, 1104 

— Australian Metal Exchange 215 

— Zinc Producers' Asso. Prop., Ltd. 1104, 

1120, 1121 

Zinc blende. Roasting of 1021 

Zinc, Brit. Col 236, 269. 27« 

Zinc, Burma 20, 137 

Zinc, Calif .v, 199, 608 

— Discovery in Inyo Co 1005 

Zinc, Canada 483, 484. 808 

—Bounty 796 

Zinc, China, mine 1064 

Zinc, Colo 61, 180, 606, 608 

Zinc Corp., Hirsch loses appeal against, etc. 

148, 1095 

Zinc Corp. of Mo 497, 539 

Zinc-dross classification 722 

Zinc dust In 1915 611, 714 

Zinc electrolysis, C. A. Hall's 263 

Zinc, Electrolytic, Paper on 425 

Zinc, Electrolytic, enterprises 22, 25 

—Reviews and notes 94, 270, 361, 1048 

— Proposed plant near Spokane 1 132 

Zinc, Electrothermlc smelting 998, 1080 

Zinc, France — Ore export allowed 996 

Zinc-fume bags, Br.vant's method of shaking, 

by conip. air 185 

Zinc, Idaho 177, 60S 

Zinc, III 61, 606, 608 

Zinc, Italy 762 

Zinc, .Japan 133, 134. 458. 1020 

Zinc. Joplln deposits. Origin of 102 

Zinc Malm process at Bunker Hill & Sulli- 
van 679, 864 

Zinc metallurgy In 1915 92 

Zinc, Mexico 608 

— Villa duties on ore 1059 

Zinc, Mo., Kan., Okla 61, 64, 606 

— Joplln dist. mining 64 

— Joplln dist. ore, revised 336, 572, 608 

Zinc-ore and sheet prices '44, 62, 64 

Zinc-ore, Appraisement of imported 1086 

Zinc ore contracting and smeltery plans, 

Gallagher's, Joplln 709, 876 

Zinc ore. Importation of 954 

Zinc ore. Milling low-grade — Media mill, 

Webb C.y •441 

Zinc-ore milling, Slocan •463 

Zinc-ore tariff wanted 920 

Zinc oxide, dust and dross exports and 

imports 714 

Zinc oxide from zinc ashes 1128 

Zinc, Peru •848 

Zinc Producers' Assoc. Prop,, Ltd. 1104. 1120. 1121 

Zinc properties, IT. S. Smg 1063 

Zinc refining by redistillation 93 

Zinc. Russia- Siberian mining 65 

Zinc smelters. Galvanizers as 1082 

Zliic smeltery. Donora. See "V. S. Steel." 

Zinc smelterv. Weir Cv., Kan 751 

Zinc smelteries idanned. Kan., Okla 620 

Ziricsiiieltirig ciiiiacity increase 196 

Zinc siiiclliiig ill CI, Kril 153, 743 

Zinc snielling jilaii. British 145 

Zinc smelling. w;ir time 828 

Zinc snielling. Why Gt. Brll. does not Increase 447 

Zinc, rnited Kingdom 335. 347. 1109 

Zinc, r. S 41.196 

—By states 61 

— Revi.sed spelter statistics, etc 606 

—Ore iiroductlon, 1911-1914 128 

— Imporlation of ore 954 

— Imports and exports zinc and ore 446, 811, 

826, 957. 1126 

— Sline, smeltery refinery map ^es. 259 

— Smelting capacity— Tables 62. 66. 609 

Zinc. Utah 114, 115, 140,608 

Zinc. Wis 65, 608 

Zook, J. A. I^ead and zinc. Joplln 64 

— Ore production 572, 608 



.'"" 



THy- 



Ipnf 



erind 



''•'''....>•"'' 



;pii^Joiimal 



.^ 






I 



VOLUME 101 



JANUARY 1, 1916 



fine Toinm Reed°G©M Road MiMimg 



By J. D. Speek* 



."^YXOPSIS — District lies on Colorado side of 
Black Mouniain Range, near ivestern boundarij of 
state, and borders on California and Nevada. It 
is characterized hy lack of sedimentary rocks. 
Profound fissuring has resulted in veins not yet 
bottomed by deepest workings. Oatman experi- 
encing big boom; has about 100 incorporated 
mining companies, about JiO of ichich are operating; 
10 having good milling ore and 3 having large 
producing mines of proven merit. 



This district was formerly known as the Sau Francisco 
mining district of Arizona, but it is now commonly called 
the Tom Reed-Gold Road district, after the two oldest 
and best-known mines. 

In the earlv history of Slohave County, little is writ- 
ten of the Black Range mountains along the western 



ning engineer, Tom Reed CSold Mines Co., Oat 



])art of the county, except the records of a few Indian 
fights. Prospectors thought the range worthless because 
there were no high-grade ores to be found on the surface ; 
and silver -in other parts of the county was then attracting 
more attention. Shortly after the slump in silver, gold 
was strnck where the Gold Road mine is now located. 
This was followed by the usual rush, and some work 
was done in other parts of the district, followed by a 
long period of comparative quiet. Of late years, no one 
would belie\e a boom possible in ilohave County — it 
seemed too old and well-known. But the unexpected 
happened. Now the Tom Reed-Gold Road district is grow- 
ing so fast it is difficult to keep track of developments. 
The main portion of the district lies on the west Hank, 
or Colorado River side, of the Black ilountains, or River 
Range, in the western part of Mohave County. It em- 
braces an area of about 6 mi. east and west by about 10 
mi. north and south, with tlie camp of Oatman as the 
])resent center of an activity recalling Goldfield's boom. 




u TIVITY IN -VND ABOUT OATMAN, THE I>.\TKST BOOM CAMP 



THE EXGIXEERING 6- MINING JOURNAL 



A^ol. 101, No. 1 



The topography of the district is generally similar to 
that of the Southwestern desert country. Enormous 
volcanic action, Assuring and faulting, followed by erosion, 
have left the country- rough and rugged as a whole and 
marked by deep caiions, steep slopes and high peaks. The 
general strike of the range is north and south. The west 
drainage is directly into the Colorado Eiver, and the east 
drainage is into the Sacramento A'alley and thence into 
the Colorado. 

There are three outlets to points on the Santa Fe 
railroad, the only one into this part of the country. 
These points are connected by generally good desert roads 
to Oatman and the surrounding properties. 

Needles, Calif., is the nearest railroad center. This is a 
division point of the Santa Fe, lying on the west side of 
Colorado River about 20 mi. from Oatman. The fact 
that all goods via Needles must be ferried across the 
river makes this town unimportant as a shipping point. 

Kingman, the county seat of ilohave County, lies about 
27 mi., by road, to the east of Oatman. This is the main 
shipping point at present. Practically all supplies are 
hauled bv motor trucks or wagons from this town. As 



group at about the time this bulletin was written. Well- 
defined oreshoots have been worked with great profit in 
this mine, and it is now one of the well-known mines of 
the country. 

Since the writing of Mr. Shrader's report several other 
prospects have been worked to a greater or less extent, 
so that at the present time considerable more is known of 
the economic importance of this district. The present 
activity, which began a little over a year ago, justifies 
a summation of these later developments and of the 
facts proved by them. At this writing between 75 and 
100 companies are operating in the district. Of these 
three have proven mines, about 10 others have some 
showing of milling ore opened up, and about 25 are 
carrying on active development. 

Complex geologic conditions offer great opportunity 
for detail study of general conditions which will be briefly 
summarized here. 

A pre-Cambrian complex of schists, gabbros and por- 
phyries underlies and forms the base of the range. 
Sedimentaries are markedly absent, although occasionally 
found overlying the granites, notably as lilack shale, which 




l'ANOR.\M.\ OF THi: TOM REED-OOLD R(iAi:> MIXING DISTRICT .\ND THE CA .' 



a .supply point for the surrounding country, Kingman is 
rather an important town. Tlie steep grades over the 
mountain make freighting difficult, but considering the 
character of the country, the charges are reasonal)le. 
Kates are generally fixed by contract and may range any- 
where from 8c. to 25c. per 100 II)., depending on the 
acce.'isibiiity of the point of destination. Topock, on the 
Arizona side of Colorado River, lies about 27 mi. to the 
southwest of Oatman. A good road is being Ijuilt to this 
station to provide a railroad outlet that will avoid haul- 
ing over the Gold Road hill from Kingman. This road 
is held to a maximum grade of 10% on the u]i haul to 
allow of advantageous use of motor trucks. 

The older historj- of tiiis district is well outlined in 
the United States Geological Survey bulletin No. 310, 
of 1908, by I'\ C. Slirader. Later important economic 
developments began with active work on the Tom Reed 



may be .«cen just to the south of Boundarv' Cone. Other 
rocks higher up in the range may possibly be altered 
sedimentaries. 

Overlying the pre-Cambrian "base is a .series of flows and 
intrusions, highly altered, difficult to separate and con- 
veniently referred to as the "Undifferentiated Voli'anics.'' 
It is, however, in these later igneous flows that the mines 
arc found, and their economic importance justifies closer 
study and a more careful differentiation. 

These rocks are everything from rhyolite to basalt. 
They grade from very acidic to very basic in a most con- 
fusing manner, and no one, as yet, has definitely inapi»cd 
or determined the different flows. Formerly it was sup- 
po.sed that the flows were arranged somewhat as follows : 
An old andesite overlying the granites, followed liy ;i 
younger or chloritic andesite, both of which were cut by 
rhyolites and covered by a basalt. 



Janiiarv 1, I'Jlfi 



THE ENGINEERIN(i >S- MINING JOURNAL 



The mineral belt was supposed to be within the ehloritic 
andesite and limited to it. Present developments, how- 
ever, seem to show an entirely different state of affairs, 
which is both more complicated and of greater importance 
to the district as a gold producer. It is now definitely 
proved that the mineral belt is not limited, especially in 
depth, to the ehloritic andesites. True fissure veins have 
been traced through the ehloritic ande-sites and over 200 
ft. into an underlying rock which has not been definitely 
classified, but which is certainly not the "older andesite" 
of local fame. And the oreshoots continue to the deepest 
workings in the district. 

True fissure veins have been found at depths of from 
200 to 400 ft. iu ehloritic andesites, but capped by a 
basic andesite similar to the rock previously called the 
"older andesite." 

After careful study covering a period of two years, the 
writer is of the opinion that the tiows followed more the 
following order: A nearly nonual andesite, called a 
biotite andesite or ehloritic andesite, follows the pre- 
Cambrian complex. Following this flow was a period of 
great Assuring and faulting, during which enormous iutru- 



were laid down as a series of flows which were afterward 
tilted to a pitch of from 60 to 80°, but as yet there is not 
sufficient evidence to justify advancing this theory. 

The latites and rhj-olites paralleling the main fissure 
\eins are presumably the mineralized feeders from which 
the hydro-thermal solutions mineralized the fissures in 
the adjoining rocks. No pay ore has been found 3'et 
within these intrusions, but the concentrations seem to 
occur within the fissures close by, but cutting through the 
andesites. 

The surface is capped and it is necessary to penetrate 
the capping, sometimes to a depth of 400 or -500 ft., to 
find the true fissure veins. The ore occurs in shoots within 
the veins, which shoots are separated by areas of barren 
or low-grade material. No definite law has been evolved 
for finding these shoots, but it has been proved that they 
repeat themselves within the same fissure. There is a 
\ast undeveloped territory within this district, but the 
work being carried on at present can be counted on to 
develop at least a part of it into paying mines. 

Oatman, as the center of activity and main distributing 
point of the district, ha? grown in all directions, in- 




TMAN. SHOWING THE MINE FOR WHICH THE DISTRICT IS NAMED 



sions of latite and rhyolite were thrust upward and most of 
the great fissure veins were formed. Following this period 
of fissuring came another flow of andesite of a more basic 
type than the ehloritic andesite. This flow probalily 
covered all the ehloritic andesite and even spread beyond 
it. Then, following a period of erosion, came a flow of 
basalt, which is the last in the series and remains as a 
capping over most of the Black ]\Iesa part of the range. 
Since the primary fissuring, there has been little move- 
ment of note. 

System of Fissurixg A\'ell Developed 

The district shows a remarkable and well developed 
parallel fissuring, especially in that part within a radius 
of 3 mi. from Oatman. The main fissuring and general 
formation strikes about northwest and southeast. This 
leads to another theorj' — that the andesites and latites 



eluding straight up and straight down. From a one-mine 
camp of perhaps 300 or 400 inhabitants, it has become 
the seat of operations of nearly 100 organized companies 
and has six times its former population. It takes nearly 
half an hour to drive an auto from one end of the camp 
to the other. 

Since its foundation, Oatman has always been a model 
camp. Cleanliness has been the watchword. No tin 
cans or refuse is allowed to litter the streets. The houses 
and business buildings have always had a well-kept, per- 
manent look, and daring these boom times the effect 
of these early adopted principles is being felt. 

Living conditions are such as one expects to find onlv in 
large towns. Electrii'ity, furnished from a modern plant 
in Kingman, adds much to the camp ; practically all the 
houses are electrically lighted. An ice plant has done a 
good business here for years. One can buy anything from 



THE EXGIXEEBTXG &- :\riXIXG JOrRNAL 



Vol. 101, ISTo. 1 



3:Acr. ■mw£'?6WVP\ci-^('^:. 







■Topock Auio Stage 
Road n Miles 



Z''^ 






i$?. 



4te, 



^^ 



^^?g 



H>fe. 



^e 



^^s.^^/. 






e-s 



C-Z/i 



L.^.;' 



?'>00 
Mil, 




MAT I'F CLAIMS IN Ti i.M K i:i;n-< lol.l ) KoAD MINIM; HISTHIL'T 



Janiian- 1, 1910 



THE ENGINEERING &^ .MJXIX(i JOUUXAL 



a potato to a hoist from the stores, provided they are not 
'•just out." Teleplioncs and telegraphs and uniformed 
messenger Ijoys are connnonplace features. The camp 
hoasts three news])apers and they are enterprising sheets 
too; e.xtras are put out on the slightest provocation. 
There is a motion-picture show witli pictures changed 
daily. In fact, there are few modern comforts and con- 
veniences that the camp has not acquired. 

As an unusual feature of prospecting, the automobile 
plays an important part. Everything nowadays is done 
by machinery, and here traveling and freighting are no 
exceptions to the rule. As the camp is 20 mi. from the 
nearest railroad point and 27 mi. from the main .shipping 
point, traveling and freighting are considerable items. 
But the automobile and truck simplify all that. It is 
no uncommon sight to see 20 or more automobiles in 




CAUFORNIA 



■ Naiionat Highway 
■■ Avtomobiles 



Poor Roads -Trails 
Telephone Lines 



Poiver Line 

ROAD MAP OF OATM.\N PORTION OP MOH.WE COUNTY 
Figures show elevation above sea level 

the center of town at the same time, and probably twice 
tliat many arrive and leave everj' day. Moreover, no 
driver complains of doing a poor business. 

A list of the businesses, besides mining, that are tlniv- 
ing in this camp would read like a buyer's guide. At 
this time there are four banks either doing business or 
preparing to do so. Several hotels and rooming houses 
are open or in process of construction, but it is a difficult 
matter to find a place to sleep if you have not brought 
your blankets. Drug stores, grocery stores, hardware 
stores and all other kinds of stores are to be found. The 
liead of one of the brokerage firms is erecting a 3-story 
concrete and stucco Imililing to be used for restaurant. 



roof garden and office purposes. Other enterprises, too 
numerous to mention, are all to be found here, includiu"^ 
"Lou's Trading Post," where you can buy or sell anythin"- 
from a frying pan to a complete mine efiuipment. 

As an exact representation of a modern camp and as 
a complete opposite to the early-day camps, the tale of 
Oatman is well-worth preserving. No gun fights occur 
iiere ; everything is peaceful and orderly ; gambling is not 
a thriving industry-; and, of course, Arizona is dry! All 
the deputy sheriff has to do is to act as traffic cop, and 
that is some job in itself. No one will ever .speak of a 
bad man from Oatman, for there "ain't no such animal." 

The boom has a solid, and comparatively conservative 
basis. The cainp has gone on record as being again-^t 
wildcatting and as favoring con.servative, legitimate pub- 
licity leased on actual worth and development, which it 
is hoped can be lived up to. The district has received 
the approval of prominent mining engineers, and the 
]irospects of steady development and growth seem unques- 
tionable. No one here is afraid of waking up in the 
morning to find the boom "busted" and the camp dead, 
as has occurred so often heretofore. All of the prospects 
will not make mines, but there is no question of the 
district making good ; it has already done that. 

Miiaajnig Coimdiattioiras AtrouBiradl 
OsitlsmiSiini ©.sac 



EuiTOItl.VL CORRESPOXDENI i; 

Although the excitement of the Oatman (Arizona) 
boom is only eight or nine months old, the camp and 
the surrounding territory have four large producing 
mines — which of course antedate the boom — yielding to- 
gether between $300,000 and fUoOCOOO per month. These 
are the Gold Eoad, tlie Tom Eeed, the Golconda and the 
Tennessee. At least one other will l)e added to this list 
when its 200-ton mill, now under construction, is com- 
]i!eted, and there are several small producers at present 
nnd there is likelihood of their increasing, both in number 
and in amount of production, as development work now 
in hand progresses. 

Although there is a new company organized every day 
— sometimes two — the Arizona Corporation Commission 
is using more care now in granting permits for the sale 
of stocks, but there is every reason to believe that many 
are selling stock who will not engage in actual develop- 
ment. 

The Camp's Producing ilixEs 

The Gold Eoad produced during the year 1914, ac- 
cording to the report of the United States Smelting. 
Eefining and Mining Co., of whicii it is a subsidiary. 
107,846 tons of ore. Other than these the company ha< 
not made public its production or dividend figures. Tli. 
Arizona State Tax Commission fi.xed a value on this 
mining property, for the purposes of taxation during the 
current year, of $262,670, and the value of improvements 
at $166,940. 

The Tom Eeed made the following production accord- 
ing to its report dated May 20, 1914: 1910, 14,289 tons, 
average value per ton $42.46; 1911, 39,447 tons, $19..">;>: 
1912,^43,478 tons, $23.22: 1913. 48.110 tons. $21.09: 
The gross gold production for 12 months ended March 
of that voar was $1.1.-)S.927. The AH/oua St;itc Tax 



THE ENGINEERING &- MINING JOURNAL 



Vol. 101, No. 1 



Commission, for the purposes of taxation for the current 
year, put a value on the mining property of the Tom Reed 
of $.3,034,060, and on the improvements, $175,500. 

The total net bullion production to Apr. 1, 191-1, was 
.$-1,051,215. To and including dividend 46, May, 1914, 
the total dividends disbursed amounted to $1,882,864. 
The operating costs for the year ended Apr. 1, 1914, 
were as follows: Mining, $4,153; milling, $1,664; cyan- 
iding, $1,557; marketing, $0,155; total, $7,529. The 
indirect cost, composed almost entirely of depreciation 
charges, was $1,133, making a total cost per ton of 
$8,622. 

The Tom Reed is now producing $100,000 per month 
from 4,000 tons of ore, which is treated in a 20-stamp 
mill. The working force is about 150 men. The ore 
is free-milling and is easily cyanided. No ore was en- 
countered unfil a depth of 300 ft. was reached. The mine 
is opened up to a depth of about 1,200 ft. 

The Golconda mine at Golconda in the Wallapai dis- 
trict, 20 mi. north of Kingman, owned by the Union 
Basin Mining Co. and controlled by N. L. Amster, of 
Boston, has paid two dividends this year, of $85,000 each. 
The company is at present expending in the neighborhood 
of $100,000 on the construction of a 200-ton oil-flotation 
plant for the treatment of zinc ores. 

The Tennessee mine in the Wallapai district is re- 
ported to have made a new find of ore on the 1,200 level. 
The big shaft is progressing toward the 1,500 level. The 
mine has increa.sed its regular output from 100 tons per 
day to 200 tons, 3 carloads per day being shipped to the 
Needles smelten,'. 

In the Secret Pass district, 20 mi. west of Kingman, 
the Orphan mine is being worked under bond and the ore 
treated in a 2-stamp Tetrault mill. From six weeks' op- 
erations three bars of bullion have been shipped, amount- 
ing to about $2,000; the total mill run having been only 
about 200 hr. 

Prominent New Entries 

The United Eastern Mining Co. was organized by two 
practical miners, George Long and James Melver, who, 
while working in the Tom Heed mine, figured out the 
trend of the rich Tom Reed lead and secured control of 
the adjoining ground iiiuk'r bond. Seelcy W. iludd and 
Frank A. Keith became interested in the venture, and 
at a depth of 200 ft. the apex of an ore chute was tapped. 
The mine is now opened up to a depth of 565 ft., and 
it is claimed that $5,000,000 worth of ore is in sight in 
the mine — developed witliin a period of eight months. 
.\t one place the ore is said to be 43 ft. wide and averages 
$32 per ton. D. C. Jackling, representing Hayden- 
Stone interests, has just been elected to the directorate. 
The company lias recently authorized the construction of 
a 200-ton cyanide plant, work on which has already 
begun. 

It is not often that a boom cam|) gets the invested in- 
terest of as many ])roiiiinent men as are already associated 
with Oatman. T\\u following are some of the more 
prominent: Senator W. ,\. Clark, I). C. Jackling, N. L. 
.Vmster, Seeley W. Miidd, Frank Keith, J. Parke Chan- 
ing, A. E. Carlton, United States Smelting and Refining 
Co., Hayden, Stone & Co. 

J. Parke Clianning, in connection with G. W. Long 
and J. L. McIver of the United Eastern, has taken over 
from II. Ci. Putney the Putney grouj) of 12 claims and 



has organized the Oatman Syndicate Mining Co., a 
close corporation, for the development of this property. 
Work has already been started on a 500-ft. working shaft. 
About the only approved method of development in this 
district is sinking from 300 to 500 ft. and then cross- 
cutting and drifting. Practically no surface work is 
being carried on. This is an unusual feature of a boom 
camp. Gas-engine hoists and compressors and Jack- 
hamer drills are the usual equipment. 

Scale of Wages and Transportation 

The wages paid are about the usual in the mining 
camps of the West. The following is the scale: Super- 
intendents, $250 to $350 per month; hoist engineers, 
$4.50 per dav : pump men, $4; timber men, $4 to $4.50; 
machine dril'lers, $4 to $4.50; hand drillers, $3.50 to $4; 
blacksmiths, $4 to $4.50; carpenters, $4 to $6; car and 
shovel men $3 to $3.50; surface laborers $3 to $3.50; 
ore sorters, $3 to $3.50; millmen, $4 to $6. It is com- 
pulsory, under state law, to pay twice a month. 

The automobile, of course, is a prominent feature of 
the present activity. Three hundred motor cars and 
trucks are now in use in the county. About one-third 
are the poor man's friend — the little Ford. Kingman 
alone boasts of 60 Fords, 76 of other makes and 20 trucks 
— about one machine to every 10 inhabitants. 

The following list of distances to the important cen- 
ters of activity in this section of Mohave County is in- 
teresting in this connection. 

Distances from Kingman by wagon road to: Gold 
Road, 23 miles; Oatman, 26; Union Pass, 20; Secret 
Pass, 20 ; Fort Mohave, 43 ; Chloride, 23 ; Mineral Park, 
20; Golconda Mine, 17; Golconda Extension Mine, 16; 
Cerbat Camp, 14; White Hills, 43; Hackberry, 28; Cop- 
per Giant iline, 36 ; ilusie Mountain, 39 ; Wallapai Tel- 
lurium Klines, 15; Williams Tungsten Mines, 68; Yucca 
Tungsten Klines, 35; Stockton Hill, 11; Molybdenum 
Mines, 35 miles. 

A bond issue of $100,000 was recently voted by the 
county for the purpose of building and improving roads. 

For the information of those wishing to visit this 
region a list of the railroad fares from various points 
(subject to change without notice) is given. 

Fare to Kingman from : Boston, $76.75 ; New York, 
$74.75; Chicago, $56.40; Denver, $38.50; Salt Lake, 
$35.85 ; San Francisco, $22.20 ; Los Angeles, $13.60. 

Oatman is now experiencing a building boom. The call 
for oHice rooms, hotel accommodations and business 
(luartcrs is resulting in the building of several new and 
modern building.*, besides large additions to buildings 
already u]). The townsite boosters are getting more 
numerous daily. There are now at least 12 townsites 
and additions in and around the main camp. 

The rest of Mohave County is also ex]ieriencing a re- 
vival as a result of the interest in the Tom Reed-Gold 
Road district. A strike of porphyry copper, carrying 
some native, made a short time ago at Mineral Park, 
caused quite a rush and everything in that locality has 
been staked. 

t& 

riotlnum Proiluctlon in the I'nitrd StatM in 1914 amounted 
to .'i2r. troy i>z. of platinum from domestic crude placer ma- 
terial or a total of S.I.TO oz. of new retlned platinum from 
platinum sands, gold bullion and copper matte, according to 
the GcoIoBlcal Survey. In addition there was a production of 
C4 troy oz. of iridium, 195 oz. of osmlridium and 2,635 oz. of 
palladium. 



Jaimarv 1, 191 fi 



THE KN(iINEKRIN(; a^ MTNINPt JOURNAL 



CoaH Tar Siimdl Itts Frod^cit; 



SYNOPSIS — Increasing interest in and need of 
coal-tar products lead to construction of many 
new plants likely to make the United States inde- 
pendent of imports after the war ends. Coal-tar 
distillation is not particularly difficult to accom- 
plish; expert labor not required. Among the prod- 
ucts of the distillation of coal tar are ammoniacal 
liquor, crude naphtha, benzol, toluol, carbolic acid, 
cresylic acid, naphthalene, anthracene and creosote. 

The increasing interest in the coal-tar industry has 
been stimulated by the cutting off of our sources of sup- 
ply by the European War. When the war is over it is 
not likely that we will go abroad to purchase these prod- 
ucts, as we have always done heretofore, because we shall 



class of coal and the temperature of ilistillation. The 
figures^ here given are representative of an average tar. 
In particular cases they might be slightly higher or 
slightly lower, depending of course upon the quality 
of the tar; but the whole of the quantities stated herein 
are being obtained under everyday working conditions 
and do not represent simply laboratory-experiment results. 

The primary distillation of one ton of average gas 
tar will produce approximately : Ammoniacal liquor, 5 
gal. ; crude naphtha, 5.6 gal. ; light oils, 26 gal. ; creosote 
oils, 17 gal.; anthracene oils, 38 gal.; pitch, 12 ewt. 

In the continuous process of distillation there is no 
ground for the prevalent idea that tar distillation is 
an intricate and offensive process. Neither is it neces- 
sary to employ for supervising the plant men who have 
had previous experience with distillation. Perhaps it 

Coal 

100 tons 



Volatile Products 
•3D tons 
I 



Coke 
70 tons 



Retort Carbon 
200 lb. 



Gas 

16.85 tons 

Wl.VO cu.ft. 



1875 gal 



Oven Coke 

60 tons 

(Net salable) 



Gas Coke 

47.5 tons 

(Net salable) 



. Gas . 

(Oxide Purified) 

1,071,750 cu.ft. 



Breeze and 

Waste 

£2.5 tons 



Cyanogen(CN) 

107 lb. 

750 cu.ft. 



I — 

^ Gas ^ 

(Partly debenzolized) 

530 B.t.u. per cu.ft. 

1.067,850 cu.ft. 



Carbon Bisulphide 
64.2 lb. 
Gas ^ 321 cu.ft. 

(Catalyticall^ Purified) 
550B.t.u. per cu.ft. 
1,071,430 cu.ft. 



ScrubberWater 
3750 gal. 



Tar 
5.35 tons 
1072 gol. 



LiqhtOils 
^267 lb. 
36.4gal. 



Middle Oils 
1366 lb. 



leavyOils 
967 lb. 
I07.2qal. 

l! 



Pitch 
7500 lb. 



Sulphureted 

Hydrogen(HjS) 

968 lb. 

10,714 cu.ft. 



850cu.i 



I 

Benzol 
80.3 qal 



PrussiariBlue 

K.FerPe.CeNfc) 

200 lb. 



._ Gas ^ 

(Debenzolized) 

500 B.t.u. per cu.ft. 

1,060,710 cu.ft. 



Benzol 
160.7 gal. 



Benzol 
241 gal. 



SulphuricAcid 
I (l00%,HjSO4) 

Yellow Prussiate 1.4 tons 
(K4Fe.C6N6) 

300 lb. I 

i SulphuricAcid 

(Sp.Gr l.71,feO°Be.) 
(H2S04 + l.52HjO) 
Sodium Cyanide 1.8 tons 

(Nq.CN) 
200 lb. 



Benzol -. 
^uplized J 



(Detol.-., 
209g 



Toluene(C6H5.CHj) 
32 gal. 



Surplus Acid 
0.675 ton 

Sulphate ^ Ammonia 
1.2 tons 



1.125 tons 



Benzol 
CeHeClmpure) 



13.4 g 



Naphthc 

andLoss 

1671b. 



Fuel Oils 
1349 lb. 



.Naphthalene 

VcioHa) 

\23Jlb. 



benzene 

(CeHe) 

536 gal. 



Residues 

and Loss 

6.43 gal. 



Toluene 

(C6H5.CH3) 

1.61 gal. 



Fuel Oil 
2149 lb. 
241 gal. 



lenOil 
00 lb, 



Anthracene 
Cake 
167 lb. 



Anthracene ^ 

(C6H4.C2H2.CeH4) 

17 lb. 



Residues and Loss 
ISO lb. 



CarboMcAcid 

(C6H5.OH) 

331b. 



CresylicAcid 
(C6H4.CHj.OH) 



Ben-zene Residues and Loss 

(CeHe) 102 qal. 

107 gal. 

THE JIORB COMiNlON DERIVATIVES OP THE DESTRUCTIVE DISTILL.iTION OP COAL, 



Residues 

ond Loss 

671b. 



by then be producing ample supplies of all these products 
from our own plants, mostly as byproducts. 

The importance of the coal-tar industry is not confined 
to dyestuffs and allied products, but touches in a most in- 
timate way the mining industry; some of the uses being 
benzol for motor fuel, toluol for various explosives and 
especially in the nitro-derivative class of mining explo- 
sives, such as the gelatin dynamites, for disinfectants, 
wood preserving, and for creosote oils for timber preser- 
vation. 

Tar is an exceedingly complex substance, consisting 
of a mixture of more than 200 different chemical com- 
pounds, and of course varies considerably in quality 
and quantity per ton of coal distilled, according to the 



will be of interest to consider further the treatment ap- 
plicable to the various distillates for the production 
of the refined or semirefined products for which there is 
a continually increasing demand. Among such products 
are : 

1. From crude naphtha and light oils: 00% benzol 
used for motor and chemical requirements ; solvent naph- 
tha used in the rubber industries ; toluol used for chemical 
and explosive purposes. 

2. From creosote oils: Carbolic acid for disinfect- 
ants, ex]ilosives, etc.; cresylic acid for disinfectants and 
chemicals; naphthalene for coal-tar colors and other 



'From "Iron and Coal Trades Review," London, Oct. 15, 



THE EXGIXEERIXG &-• MINING JOURNAL 



Vol. 101, No. 1 



purposes; creosote light oils for disinfectants and wood 
preserving. 

3. From anthracene oils: Creosote for timber pre- 
serving and other uses; anthi'acene for colors, alizarin, 
etc. 

The products enumerated ixnder item 1 are contained 
in the first two fractions obtained in the continuous 
plant, and can be separated therefrom by additional plant 
of very simple design. One ton of average tar will, from 
tbe crude naphtha and light oils, yield 2.5 gal. of 90% 
lionzol. 2.0 gal. of cnide toluol and 5.5 gal. of solvent 
naphtha. 

Rectification on the continuous system is a very simple 
process and calls for no special knowledge in its manipu- 
lation, the operation being well within the capacity of a 
man of average intelligence. The plant automatically 
and continuously delivers crude benzol, crude toluol and 
.-iilvent naphtha. 

Referring to group 2 of the aforementioned products, 
one ton of average tar contains 3 gal. of crude carbolic 
acid, 3 gal. of crude cresylic acid and 112 lb. of crude 
naphthalene. 

For the recovery of the tar acids (crude carbolic 
and cresylic acids) a simple type of plant is required, 
in which the middle oils are washed with caustic soda, 
wbich chemically combines with the tar acids, forming 
sodium carbonate and ."^odium cresylate. By heating the 
latter with waste carbolic-acid gas, the tar acids are sep- 
arated. The plant is generally arranged so that the car- 
bolic and cresylic acids may be obtained separately. 

Naphthalene in its crude form is used for agricultural 
insecticides, fire lighters, etc. It is, however, recovered 
without difficulty by cooling the various distillates in a 
suitable apparatus, when the naphthalene separates out 
in the form of yellow crystals, which are freed from en- 
meshed oil by suitable means, producing crude naphtha- 
lone. An average tar contains approximately 5% of 
naphthalene. 

Anthracene is contained in the heaviest portion of the 
distillates obtained from the first distillation process. 
The yield is about 12 lb. of 30% anthracene per ton of 
tar distilled. 

After having isolated the various materials previously 
referred to, the residuum is creosote oil, so that there are 
no working charges to be set against the creosote. One 
ton of tar will produce 42 gal. of creosote oil, partly 
obtained from the creosote-oil fraction and partly from 
the anthracene fraction. 

The accompanying diagram- shows what byproducts 
can be extracted from coal in the gas industry, the quan- 
tities given being those derived from the gasification of 
100 tons of coal, as shown. 

The den)and for coal-tar products has suddenly grown 
so great that during the year 1915 the following plants 
have been constructed for the production of benzol : 

The United States Steel Corporation built three ben- 
zol plant.s — one at Farrell, I'enn.; one at Gary, Ind.; 
and one at Birmingham, Ala. These plants have a ca- 
jiacity of ap|)roxinuitely 2r),000 gal. of crude benzol per 
day. Otto Coking Co., of New York City, contracted to 
build a benzol plant in connection with byproduct coke 
ovens of the Citizens Gas Co. of Indianapolis. Lehigh 
Coke Co., South Bethlehem, Penn., built a jjlant with ca- 



■From "Coal Age," July 3, IJIB. 



pacity to take care of gas from 3,000 tons of coal per day, 
the fuel consumed in two batteries of 212 byproduct coke 
ovens of the Koppers type. Benzol Products Co., Marcus 
Hook, Penn., built plant for the production of benzol 
jointly for the General Chemical Co., the American Coal 
Products Co., and Semet-Solvay Co. Republic Iron and 
Steel Co. started manufacturing benzol and homologues 
at Youngstown, Ohio; capacity, 5,500 gals, per day. 
Dominion Steel Corporation, Sydney, N. S., completed 
and put in operation benzol plant for manufacture of 
benzol and toluol, which is also produced at bj'product 
coke-oven plant at Sault Ste. Marie. Crows Nest Pass 
Coal Co., Fernie, B. C, constructed plant for the manu- 
facture of benzol and toluol, especially for the British 
Army. Tennessee Coal, Iron and Railroad Co., Birming- 
ham, Ala., constructed benzol plant at Fairfield, with 
capacity' to recover, from byproduct gases, 15,000 gal. of 
benzol every 24 hr. At Woodward Iron Co., Woodward, 
Ala., plant erected by Edison Laboratory Co., of Orange, 
N. J., to utilize gas from byproduct ovens at Woodward; 
capacity, 2,000 gal. of benzol per day. Lackawanna Iron 
and Steel Co., Bufi'alo, N. Y., built and started operation 
of benzol plant at Lebanon; capacity, 1,000 gal. per day. 
Illinois Steel Co. is to build, at Joliet, 111., a "benzol lab- 
oratory," to cost $800,000, and to be ready Feb. 1. Zenith 
Furnace Co., Duluth, Minn., completed benzol plant, 
capacity, 600 gal. per day. 

The report of the Batopilas ?^Iining Co. for 1913 and 
1914 has just been published, and in it a great deal of 
information regarding the company's vicissitudes during 
the revolutionary period is given. The compan)' con- 
trols a large concession with mining and milling proper- 
ties at Batopilas, in Chihuahua, Mexico. 

During the first five months of 1913 work was fairly 
constant at the mine, but in June revolutionary activi- 
ties put a stop to actual work and the Americans left 
the district. Operations were continued in a way with 
Mexican help and under the direction of loyal Jlexicans, 
but production was not great. Owing to interruption to 
transportation, cyanide and other supplies could not be 
obtained, so that in July, 1913, work was limited to pan 
anuilgamation and concentration, though the low-grade 
concentrates had to be stored for future treatment. 

About the end of 1913 conditions a])peared to be satis- 
factory, and it was intended to start the works up again, 
but it was found that the district was in the hands of 
bandits and nothing could be done. Work under the 
new manager was not instituted until the early part of 
September, 1914, and from that time up to September, 
1915, the district was quiet and work proceeded at a 
normal rate. 

During the absence of the American officials of the com- 
pany, the property was in charge of responsible Mexican 
emi)loyees. It is a notable fact that the conlidence re- 
posed in these men was not misplaced, and tiicy loyally 
used every effort to protect tiie property and do the In -t 
possible with it. As a matter of fact, the destruction, 
while great, was much less than might have bci-ii expected, 
and there was no serious trouble in starting the work up 
again. 

In Se])tember, 1915, Americans were again notified 
by consular officials that it would be dangerous to rciiiaiii 



January 1, 1916 



THE ENGINEERING <^ MINING JOURNAL 



in the territory, so they left, and at the present time the 
])ropert\' is again in charge of Mexicans. 

The production during 1913 amounted to 374,174.80 
oz. of fine silver. Of that metal produced in 1914, there 
was 188,087.28 oz. Exploration work during the latter 
year was done to the amount of 1.2(J0 ft. 

M^SftapE® vSo S®s=a©® ISSectta ©Sg^fea® 

By riiiLip L. Gill* 

Modern practice in electrolytic copper refining has for 
some years been drifting steadily toward the so-called 
multiple and away from the older series system. The 
Baltimore refinery of the American Smelting and Refining 
Co., which started with the series system, is the only plant 
in this country where both systems have been extensively 
used on a commercial scale. Recent reports from this 
plant seem to indicate that the multiple system has been 
found more advantageous, though each system has ad- 
vantages peculiar to itself, as well as disadvantageous. 

There is little if any difference in the cjuality of the 
]n-(iduct of the two systems as marketed today, though 
the advantage, if it does exist, probably here lies with 
the fceries. This is not due to any peculiarity of the 
scries system itself, but to the fact that it is treating 
anodes considerably lower in impurities, including 
])recious metals, than the general run of material received 
at the multiple-system plants. This results in a decreased 
bulk of slimes in the electrolytic tanks and allows the series 
system to maintain a shorter distance between anode 
and cathode surfaces without danger from mechanical 
contamination by the slimes^ and in consequence the 
lower voltage is less favoralde for the electrolytic deposi- 
tion of impurities. Also, a lower percentage of impuri- 
ties in the anode means a lower percentage of As, Sb, 
Ni, etc., going into solution and less cathode contamina- 
tion when electrolyte is occluded. 

Power Costs Favor Series Refixixg 
As operated today, the series system has a decided ad- 
vantage in power consumption. In addition to the lower 
drop across the electrolyte, as noted, the drop in voltage 
between anode and anode busbar, and cathode and cathode 
busbar, in the multiple system is almost entirely elimi- 
nated in the series. The end electrodes only of the 
series tank have busbar connections, and these are made 
permanent. The balance of the plates in a tank having, 
say, 120 cells, are charged positively on one side, nega- 
tively on the other. The result is two permanent bus- 
bar connections to 120 cells of 25 sq.ft. depositing sur- 
face each, for the series, against two relatively poor con- 
nections to each cell having from 7 to 9 sq.ft. depositing 
surface for the multiple. The following table, given bv 
Prof. R. S. McCaffery in the Wisconsin Engineer, illus- 
trates what this means to the Great Falls refinery, a mul- 
tiple-system plant. Tliere were 320 regular refining 
tanks — 22 anodes, 22 cathodes per tank — 90% amp. eff., 
2-day cathodes: 



Volts p.-r 

Tank 

Drop between anode and anode bus... . 0.044 

Dropbetween cathode and cathode bus. 0.0.55 

Drop across electrolyte 0.495 



14.08 7.40 

17. t» 9.24 

15S.72 83.30 



•40 Cedar St., New York City. 
'Addicks, "Met. and Chcm. Ens., 



Vol. XII. Xo. II. 



In this case 16.64% of the total tank re.-istance i.- 
caused by the connections between busbars and electrode.- 
of ihe multiple system. 

A comparison of ampere efficiency of the two system - 
as actually operated today sliows the multiple to be in: 
in advance. In one of the large multiple-system plant- 
near New York the ampere efficiency is given at from 90 
to 92%, while 6.5 to 70% is considered good work \vith 
the series. The effect of these differences on the power 
cost per ton of copper produced is illu.=trated by the 
following comparison, representing average work of th- 
leading exponents of the two systems. 

MULTIPLE SERIE.S 

Ampere efficiency, per cent 90 Ampere efficiency, per cent 68 

Average volts per tank 3 Average volts per tank 18 

Anodes per tank 28 Anodes per tank 120 

Cathodes per tank 29 Cathodes per tank 120 

Depositmg surface per cell, sq.ft. . . 7.2 Depositing surface per cell, sq.ft. 25 

Amperes per sq.ft. 18 Amperes per sq.ft If, 

Daily deposit per tank, lb 204 Daily deposit per tank, lb 2.040 

Lb. Chi deposited per kw.-day 1S7 Lb. Cu deposited per kw.-day 283 

Figuring the cost of power in both cases at yoc. per 
kw.-hr., the power cost of the multiple system would 
be $1.28 per ton of cathodes produced, against $0,848 
per ton for the series, or a 51% higher power cost for the 
multiple. 

Scrap Haxdlixg Greatest ix- Series Work 

The difference in power consumption is not. however, 
the only point wherein the two systems are radically 
different. Other considerations lielj) to overcome this ap- 
jjarent suiwriority of the series system. Stated brieflv, 
the more important ditferences exclusive of the power 
question are these: The series system requires the strip- 
ping of the "Lacks" or tmdissolved portion of the anode 
from the cathode. In theory, with a perfectly uniform an- 
ode and uniform distribution of current, the anode would 
be entirely dissolved and redeposited as cathode copper. 
In practice, however, if the electrolytic action is allowed 
to proceed too far, redeposition of the cathode copper be- 
gins to tal^e place and the power cost becomes exorbitant. 
The labor cost of '"'stripping'' also shows a tendency to in- 
crease if the percentage of backs is allowed to rim too 
low. The economic point at which to cut out a series 
tank will therefore be determined by the power cost, the 
cost of stripping and the care with which the anode> 
have been prepared and hung. Under favorable conditions 
this point is reached when the ''backs'' are reduced to 
about 1T% of the original weight of anodes. In order 
that stripping may be possible, series anodes must be 
painted before being hung. On account of the sliortened 
distance between anode and cathode surfaces, straightening 
and careful hanging of the anodes is of the greatest im- 
portance to prevent sliort-circuiting and consequent loss 
in ampere efficiency. 

The multiple system, on the other hand, has no backs, 
and the anode scrap, consisting of the lugs and undis- 
solved portions of the anodes amounting to about 15*^;, 
is returned to the anode furnaces witliout stripping. 
Starting sheets of electrolytic copper, which form the basis 
on which to deposit the cathode, are deposited on. and 
latei stripped from, rolled copper sheets, this being the 
nearest parallel to the stripping of the series system. 
But the greatest advantage of the multiple system is in 
the handling of materials. The greatest distance between 
anode and cathode and the thick, heavy anode plates ob- 
viate the expensive straightening and hanging of the ser- 
ies svstem. Anodes and cathodes are all handled in 



10 



THE ENGIXEERING &^ MINING JOURNAL 



Vol. 101, No. 1 



tank-load lots by overhead traveling cranes, giving a 
decided advantage in labor cost. Considering only the 
points so far mentioned, relative advantages of the two 
systems as operated today might be summarized as follows : 

C. per C\ per 

MULTIPLE Ton SERLES Ton 

Labor and power cost of making Labor cost of loading and un- 

starting sheets, loading and loading tanks, stripping ca- 

unloading tanks SO 230 thodes, straightening and 

Power cost 1.2S0 painting anodes $0,665 

Power cost 848 

Total $1,510 .. .,„ 

Total $l.ol3 

Analyzing other cost items on both systems, the higher 
first cost of the lead-lined tanks and the greater weight 
of copper tied up in the multiple system are offset by 
higher repair charges on the asphalt-lined tanks of the 
series system : the 17% of backs to be reworked in the 
series is balanced by the 15% of scrap in the multiple. 
Contrary to many existing ideas, the cost of casting anodes 
is about the same, the additional cost of the series anode 
lying in the straightening and painting, which has already 
been considered. While there are many other points of 
difference in the operation of electrolytic refining plants — 
such as removing excess copper from the electrolyte, purifi- 
cation of the same, treatment of the slimes for the recovery 
of the precious metals and treatment of byproducts — which 
have a large influence on the ultimate cost of copper 
refining, these differences are not due to inherent princi- 
ples of either the multiple or the series system. 

The figures given would indicate that at present the 
higher labor cost of the series system is compensated 
for by the higher power cost of the multiple and that the 
ultimate cost would be about the same. These figures 
must not be taken, however, as an exact comparison of 
costs between the two systems working on the same class 
of material ; they are simply illustrations of what has 
been accomplished by leading advocates of each working 
on their regular supply of blister copper. The series 
system is favored by a supply of exceptionally pure blister, 
wiiile the multiple is operating on, and is more adaptable 
to, impure coppers and tliose running high in silver 
and gold values. It would then be the natural choice 
of a customs plant in any locality where reasonable 
power costs could be obtained. 



Ne^v Metlhiodl off MsMatLalTsi.cttiaff'aini^ 



A new method of mamifactiiriiig sul])hiiric acid, for 
whicli advantage.s are claimed, is suggested in United 
States Department of Agriculture Bulletin No. 28:5, "Tlie 
Production of Sulphuric Acid and a Proposed New 
.Metliod of Manufacture." The essential difference of the 
metlidd is thiit tlie gases employed arc drawn downward 
througb a spiral flue in place of iieing drawn through 
lead cbainliers or intermediate towers. 

It is asserted that the resistance of gases to the down- 
ward pull and the constant change in their course through 
the sjiiral tend to nii\- them very intimately. The fact 
that the ga.ses constantly impinge on the walls of the 
s]>iral flue, which can be cooled either by air or by 
"■■'t'r, makes it praclicable to maintain the gases at a 

.i|)eratnrc Tiiost favorable for the efficient yield of sul- 
phuric aciil. In laboratory tests in which the spiral was 
utilized, prnctically all the sulphur dioxide was oxidized 
to .«ulphuric acid, only traces being lost through escape 



or in the system. The lead spiral, the author points out, 
however, is not intended to replace the Glover tower, nor 
to do away with the Gay-Lussac tower. 

It is believed that while the lead spiral will take 
considerable lead, the great reduction it will effect in 
the chamber space will make it possible to construct a 
plant with considerably less lead than is required in the 
ordinary chamber system. The new type of plant requires 
no other device to accelerate the reactions, occupies much 
less ground space and would not need as large buildings, 
and therefore should decrease the initial cost of con- 
struction. The method, however, has been tried only 
on a laboratory scale, and the bulletin refuses to predict 
just how efficient the commercial plant would be, but 
states that all indications are that this method offers 
promise of being economically successful. 



With the increasing use of acetylene in mines, there 
has arisen the question of the danger of its exploding 
in the mine from various causes. For this reason and 
because of the ease of generation of the gas from water 
and calcium carbide, a study has been made by the Bureau 
of Mines^ of the possibilities of explosions occurring when 
the carbide is being handled underground. 

There may first be considered the quantity of the cal- 
cium carbide necessary to form explosive proportions of 
acetylene. A good yield from one pound of calcium car- 
bide would be -1.6 cu.ft. of acetylene. This would render 
182 cu.ft. (equivalent to a room 6x6x5 ft.) of air ex- 
plosive on the l)asis of the low explosive limit of acety- 
lene-air mixture being 2.53% acetylene, as determined 
by the experiment of the bureau, under the ideal condi- 
tions that the acetylene be uniformly mixed throughout 
such a space and confined to it. Such an accident as the 
dropping of calcium carbide in a pool of water on the 
floor would result in a strong mixture near the water, 
but the mixture would gradually become leaner as the 
acetylene diffused into the air or was swept away by 
ventilating currents. The ignition of acetylene produced 
under such conditions would result in the formation of 
a flame confined to a much smaller space than the di- 
mensions given. 

The calcium carbide in a miner's lamp (about 50 
grams) upon contact with water would produce 0.51 cu. 
ft. of gas. This quantity could render about 20 cu.ft. 
of air explosive, if the acetylene could be confined to a 
space of that size. However, such a condition is not 
jirobable. 

Relative to the formation of acetylene from the action 
of the moisture in the mine air on calcium carbide that 
might be thrown on the floor of the mine, it was demon- 
strated that the production of acetylene in this manner 
would be too slow to form an explosive mixture with air, 
l)ecause the acetylene first formed would be continuously 
carried away by the air current, and consequently there 
would not lie an accumulation necessary to r<iriii the ex- 
])losive mixture. 

The re])ort concludi^s tiiat, on the whole, with reason- 
able precaution there need be little danger from exjilosion 
of acetylene in mines. 



Hxplcslblllty of Acetylene 



January' 1, 1916 



THE ENGINEERING &= MIXING JOURNAL 



11 



I a lilies' Si S 



)ep(n)sats of Ceirlbatl aimc 



asoima,^ 



The discovery of mineral deposits in this region dates 
from early in the 60's when rich gold ore was found at 
what is now the Moss mine, situated about 4 mi. north- 
west of Gold Road. A decade later the discovery of 
silver-gold ore in the Cerbat Range drew the attention 
of prospectors hither, and rich veins were opened in the 
Cerbat and Hualpai ^lountains. These ores were rich 
and returned large profits, althouofh the expense of 
freight and treatment ran into hundreds of dollars per 
ton, owing to the fact that they had to be packed long 
distances, on burros, to the Colorado River, thence trans- 
ported by river steamer down the Gulf of California and 
up the coast to San Francisco, whence they were shipped 
to England for treatment. 

This was the method of marketing ores until the ad- 
vent of the railroad in 1882. During this period the 
region was classed as a silver camp, until the decline in 
silver drove prospectors back into the gold belt of the 
country, where later the Gold Road and Vivian mines, 
so important in the present prosperity of the camp, were 
found. Up to the 80's, for want of transportation, there 
were but few shafts more than 150 ft. deep, although 
the production of high-grade ores ran well up into the 
millions. 

General Character of the Deposits 

The metallic deposits occurring in these ranges con- 
tain gold, silver, lead, copper, zinc and tungsten, and 
exhibit considerable diversities of character and occur- 
rence. They naturally fall into two very distinct groups. 
The first consists of quartz fissure veins containing pyrite, 
galena, zinc blende, and locally also arsenopyrite. The 
sulphide yields principally silver, but also gold. These 
deposits are confined chiefly to the Cerbat Range and 
usually occur in the pre-Cambrian rock. They are oxy- 
dized to a depth ranging from 50 to 300 feet. 

The second group comiDrises the deposits of the Black 
Mountains. They differ from those of the Cerbat Range 
in four important respects : Firstly, they occur chiefly in 
the Tertiary volcanic rock, especially in the green chlor- 
itic andesite, and are younger than the Cerbat veins. 
Secondly, they occur chiefly in fissure veins; these veins 
seeming to have originally contained a calcite gangue 
which is still present in many of them. In many cases, 
however, the calcite has been replaced by other minerals. 
Thirdly, the values are almost exclusively gold. Fourthly, 
oxidation extends to a depth of 600 to 700 ft., and as a 
rule no sulphides are found. 

The area may be conveniently considered as two dis- 
tricts : the Chloride district in the Cerbat Range and the 
Gold Road district in the Black Mountain Range. 

The principal districts in the Cerbat Range, named in 
order from north to south, are the Gold Basin, White 
Hill, Chloride, ilineral Park, Cerbat, Stockton Hill, 
McConnico and ilaynard. These are situated in the mid- 
dle part of the Cerbat Mountains and extend a distance 
of about 12 mi. and have certain features in common. 

The rocks in this section are essentially of the pre- 
Cambrian complex and consist of granite and schists, 
which are locally cut by dikes of pegmatite, diabase, 
rhyolite, etc. 

•Excerpt from Bulletin 340, United States Geological 



The croppings, which are generally prominent, consist 
of red or dark reddish brown iron- and mangane-;e-stained 
quartz and altered silicified country rock. Many of the 
veins are frozen to the walls, while others are separated 
from them by several inches of gouge. The gangue is 
generally quartz. 

The deposits of the Black ilountains differ markedly 
from those of the Cerbat Range, in that they occur chiefly 
in the Tertiary volcanic rock. The gangue is chiefly 
calcite or calcite replaced by quartz and adularia. The 
districts in the Black ilountains, named from north to 
south, are the Eldorado Pass, Gold Gulch, blocking Bird. 
Virginia, Pilgrim, Union Pass, Gold Road, Vivian and 
Boundary Cone. Of these the most important is the 
Gold Road District. 

In the recent suit Ijetween the Elm Orlu ^lining Co. 
and Butte & Superior Co. in Butte, H. V. Winchell, 
J. D. Irving, W. H. Weed, Fred T. Greene and Fred Searls 
appeared as expert witnesses for the plaintiff, and Albert 
Burch, J. AV. Finch, W. H. Wiley, R. D. Salisbun- and 
W. H. Emmons testified for the defendant. The case 
is now tmder advisement by Federal Judge George il. 
Bourquin, and a decision is not expected for two or three 
months. It involved many points in the construction of 
the mining laws and a discussion of complicated geological 
conditions. It is probable that the total expense, includ- 
ing that of development work, directly required by the 
litigation, was in the neighborhood of $300,000, and the 
value of ore deposits that will be awarded to one side or 
the other by the judge's decision runs into millions of 
dollars. 



lSiJK.ainigi, 



lorr© Vell^iO 



The making of assay crucibles and liners for gold- 
melting pots has been the subject of considerable experi- 
mentation at the ^lorro Velho mine of the St. John del 
Rey Mining Co., of Brazil. The first unsuccessful efforts 
were continued until now a serviceable product is turned 
out, and the expense of importing the goods from Eng- 
land is avoided. The production amotmts to about 400 
assay crucibles per month. 

Some work has been done in an effort to utilize the 
greenstone and serpentine rocks on the company^s prop- 
erty, but although the latter contains a portion of asbes- 
tos, there was no success attending the attempt to make 
crucibles of these rocks. 

Calafoiriraisi ©aS aia Hoveiniiifijes' 
Production of petroleum in California in November 
amounted to 7,223,250 bbl., a decrease of 451,986 bbl. 
from October. The total shipments were 883,633 bbl. in 
excess of the production, amounting to 8.106,883 bbl., 
which was 493,798 bbl. less than the October shipment-- 
The total crude-oil stocks Nov. 30 amounted t' 
959 bbl., a reduction of only 89,417 bbl. from i /. - 
at the end of October. The average daily pri ..^on, 
240,775 bbl., is the lowest average for a monthly period 
during the year 1915. The loss in production was largely 
in the ilidway-Sunset fields. 



12 



THE ENGINEERING &= illNING JOURNAL Vol. 101, No. 1 

nniiniiuniuiiiiiioiiiiiiiiiiiiiuiiumiiiiiiiiiiiiiiiiiuiiw^^^^^^ iiiiiiiiiiiuniuiiiiiiiuiiiiuiiiiiiiiiiuiuuiniiJiiiHiiiiiiiiiM^^^ 



^ttaEis ©f Frs^cUica 



o 



mnminiE 



imiiinnmiHiiiiiiiiiiiiiiniiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiMiniiiiiiiniiiimiiiiiniiiiiininiiiiiiniiiuiiiiiiiiin 

cheaper than increasing the number of holesi in the roiind ; 
it is cheaper than increasing the amount of the explo- 
sive in the hole; it is cheaper than iising a stronger grade 
of explosive. 




Lag Bolts '^^ 



By Gokdox p. Lixks* 

It has been part of my work for at least 10 months 
to investigate and determine causes of misfires in several 
mines. Most misfires can be traced to the following 
causes: (1) Wet holes — improper crimping and greasing 
of fuse; (2) holes cut out by other shots; (3) defective 
caps and fuse. 

The lacing method is invariably used in these mines, 
and not once have I found evidences of burned dynamite 
where the fuse ran through and alongside of the cartridge. 
Tlie question of cutting the fuse by 
tamping arose. Cutting is hardly prob- 
alile, as experiments were made under 
actual underground conditions, and not 
one fuse failed to detonate the blast- 
ing cap. A fuse was placed in a ])iece 
of \y^-\a. iron pipe and coarse, wet ore 
was tightly tamped in. This was left 
for 15 min., and then a cap was at- 
tached to one end and the fuse lighted. 

Three different primers (cap in- 
serted in the side and fuse tied to cart- 
ridge — cap inserted in the end and 
paper tied around fuse — laced) of I14 
in. 10% gelatin dynamite were properly tamped in a 
bore hole in a block of wood split through the center and 
clamped in a vise. On opening the block no sharp bends 
were found in the laced or side-inserted primers, but one 
was found in the end-inserted fuse. 

In view of the foregoing it is my belief that the laced 
primer, wiiich can -be made with the greatest speed, is 
the most practical for general use in iron mines. 
'^. 

Advaiatailes of Usaim^ 

To get tlie greatest clliiiciicy from The 
in any blasting operation, the largest and 
tital detonator shouhl be used. 

In a test made in a gold mine where a tunnel was 
being driven, 10% gelatin was being used and No. 6 
blasting cajjs; No. 8 l)Iasting caps were substituted with 
the same gelatin, and the ])r<»gress per shift was increased 
from 4 to fi in. The additional cost of a No. 8 cap 
is incomparalile with the increase in the advance of the 
round of nearly half a foot. Similar results were obtained 
III a section of th(,' Xcw York subway, whore 00% gelatin 
was i)eing use<l an<l No. (i electric blasting caps. On 
I'C substitution of No. 8 electric blasting caps, an in- 
rease in progress of from (J to !) in. per day was .se- 
I 11 red. 

Using a stronger blasting cap is tlic ( heapest way of in- 
' reasing the ediciency of l)la>tiiig operations. It is 

•Iron River. Mich. 



By D. E. CiiAitLTox* 

The slack-rope indicating device shown in the accom- 
panying sketch has been successfully iised at the mines 
of the Oliver Iron Mining Co. on the ^lesabi Range 
for indicating to the hoisting engineer anv slackness in 



Circuit to Battery and Bell in Engine 'ficvse 

^-^^GuideBolt *^Rope 4. ^-^Mjcsfing Screr/ 



^ r 



-Oak Bar;Length=Ojhlde Width ■'■Weatherproof '"6 
of idler Stand 3' flectnc Push- 
'11 Butlon 

■■{\ Bracket 



Detail of Slack Rope Indicator 




Slack Rope Indicator 



explosive used 
strongest prac- 



liETAILS A.VD METHOD OF INSTALLATION OF SLACK-ROPE INDICATOR 

the hoisting rope, due to the skip getting stuck in the 
shaft or to any other causes. 

The slacking-off of the rope causes it to sag and in 
so doing produces a pressure on a trip bar. This actuates 
two electric push-buttons, which close the circuit and 
ring a bell in the engine room. 

The device consists of the following: (1) A horizon- 
tal trip bar of oak which operates on guide bolts at 
either end; (2) adjusting screws fastened to trip bar by 
a countersunk bushing and suspended in a position over 
weatherproof electric push-buttons (3) by means of a 
spiral s])ring (1) ; guide bolts (.5) and ])ush-buttons are 
fastened to an oak bar (6) which is suspended fro.m the 
uprights of an idler stand bv means of iron strap brackets 

Advaiata^es of TaBnapBira^ 

The practice observed in regard to tamping is at wide 
variance. Exi)losive experts agree that tamping increases 
the useful work done by the explosive. In practice in 
some mines nothing is used, in others sand cartridges or 
clay is eni])loyed. 

The man who does not use tamping asserts that tli<' 
force of the exjdosion is so rapid that tam]iing is un- 
necessary. The man who does use tamping has in his 
sujiport tlie argument that every aid should be used to 
break the rock. Whether powder can or cannot be saved 
by tamping would seem to depend on whether the proper 

•MlnlnK engineer, VlrKlnl.n. Minn. 



Jamiarv 1, 1916 



THE EXGINKKI.'IM; ^-- MIMXr; JOUHXAL 



13 



cliarge can be jiulged sufficiently accurately so that a 
man can say, "With tamping this iiole will break, witii- 
oiit tamping it will not.'' It is very doubtful if this 
can be done, and in most cases sufficient powder is used 
so that the hole would break whether tamped or not. 

The "Carr bit," while designed primarily for overcom- 
ing certain difficulties in drilling rock, has been found to 
meet satisfactorily not only these special conditions, but 
the ordinary conditions as well. The Carr bit has but a 
single cutting edge and is uniform and symmetrical in 
shape. A transverse recess is formed across the center 
of the bit. With hollow steel this recess is tapered until 
it runs into the original hole through the steel ; with solid 
steel the recess extends back about ^ in. from the face. 
This recess tends to act as a pilot and reduces the cutting 
or contact surface with the rock to a minimum. The 
thickness of the bit is made equal to the short diameter 
of the steel and the length equal to the bit gage. Hollow 
drill-steel bits are conical in shape and have a 5° taper 




CARR BITS FOR ROCK DRILLING 

1 — For Leyner water type. 2 — For piston drill. 3 — For large 

sizes of automatic hand drills 

on a side. Solid steels have straight parallel cylindrical 
sides. 

The advantages claimed for this bit are many. It holds 
its gage better, thereby increasing the depth to which 
a hole may be drilled with a single steel. It drills a round 
hole and therefore rotates easily. It does not reciuire 
more than iV-in. variation in the gage of bits on successive 
lengths of steel. The bit, being simple in form, is easily 
made. 

The idea of drilling a hole the same size from the collar 
down to the bottom originated with the inventor from a 
discovery that a drill bit cuts a margin of clearance for 
itself; and to in.nire the drilling of a round hole, the 
shape of the bit was made such that it would be impossible 
for it to go down if the hole were not round. The loss 
of gage was overcome by providing the long shoulders 
curved concentric with the axis of the bit. Kapid cutting 
speed was assured by forming the transverse recess in the 
center of the bit, reducing the area of contact. These drill 
bits can be obtained from the Ingersoll-Rand Co., Xew 
York Citv. 



At Knoxviile, Tenn., on Nov. 22-2i exaniinatii^ns were 
held by K. A. Shiflett, chief mine inspector for the 
state, for mine foremen at coal ajid metal mines and 
fire bosses. The questions given the metal-mining ap- 
plicants, which were supplemented in some cases by oral 
(piestions, were as follows: 

1 What precaution would you use in approaching a 
worked-out or abandoned mine? 

2 What forms the most dangerous character of roof in 
metal mines in this state? 

3 What is atmospheric air? 

4 Name gases met with in metal mines. 

5 Explain proper method of thawing dynamite cartridges. 

6 Explain method of ventilating metal mines. 

7 Describe principles of natural ventilation. 

8 Explain difference between natural and artificial venti- 
lation. 

9 How is ventilation of a mine affected by a rise or fall of 
atmospheric pressure? 

10 What are the duties of a mine foreman? 

11 What are the laws governing shaft mines? 

12 How should a shaft be equipped for haulage and pas- 
sengers? 

13 Explain methods of signals. 

14 How would you proceed to sink shafts to develop ore in 
the Ducktown Basin? 

15 What measures would you use to provide safe exits 
from metal inines other than the haulage shaft? 

16 What precautions would you take on haulage shafts for 
safe conditions? 

17 What would you do before entering passenger cage? 

18 How would you handle balk ground and slopes? 

19 How would you plan exits from each drift? 

20 What, in your opinion, is the best method of timber- 
ing in metal mines? 

21 What protection should be made at surface at shaft to 
prevent accidents? 

22 How should passenger' cages be provided for safety? 

23 What are the chief causes of accidents in metal mines? 
24, AVhat would you do to prevent them? 

25 What are the chief points in the construction of shaft 
haulage? 

26 What are safety catches and why used? 

27 How would you test the haulage in shafts as to safety, 
etc.? 

28 Suppose the hoisting shaft should catch on fire, what 
would you do to protect the mines? 

29 What experience have you had with hoisting engines 
and boilers? 

30 What are the essential qualifications of a hoisting en- 
gineer? 

31 What are the duties of a hoisting engineer? 

32 What are the duties of signalmen? 

33 What special care should be given hoisting cables, etc.? 

34 How would you determine w"hen the hoist was safe? 

35 How would you test safety catches? 

36 AVhat are the rules for hoisting and lowering persons 
employed in shaft mines? 

37 How should landings be arranged? 

38 What precautions would you take to prevent accidents 
in hoisting and lowering persons in sh.ifts? 

39 What are the dangers from heaps of combustible ma- 
terial in metal mines? 

40 Explain advantages and disadvantages of usin- c 
pressed air in mines. 

41 If the shaft compartments in your mine v ■;iViIy 
saturated with oil, what precautions would : *ke to 
prevent ignition of timbers, etc.? 

42 What dangers would result from fires to shaft or hoist- 
ing plant? 

43 Define and tell the uses of each of the following: Shaft; 
drift; crosscut; raise; winze. 

44 What is the most approved method of sinking a shaft 
in hard rook? — Describe in full the machines used, the kind 
of holes to be drilled, how blasted and how the broken rock 
should be hoisted out; also how the shaft should be timbered. 

45 How should a drift be driven in hard rock? — Describe in 
full the machines used, the kind of holes to be drilled and 
the blasting of same. 

46 How should a raise be driven? — Describe in full the 
machines used, the kind of holes to be drilled and the blast- 
ing of same. 

47 How should a winze be sunk? — Describe in full the ma- 
chines used, the kind of holes to be drilled, and the blasting 
of same. 



14 



THE ENGINEERING &f MINING JOUBNAL 



Vol. 101, No. 1 



4S "What is a back slope, and what is the most approved 
method of working it? What precaution should be taken for 
the safety of miners working in a back stope? 

49 What is an underhand stope, and what is the most ap- 
proved method of working it? What precaution should be 
taken for the safety of miners working in an underhand 
stope? How should the ore be made fine enough for loading 
into cars? 

50 Describe two methods of loading ore into cars in a 
mine. Describe the methods of hauling cars of ore on the 
levels of a mine. Describe the methods of hoisting the ore to 
the surface. 

51 How are men taken in and out of mines? What pre- 
caution should be taken for the safety of miners with re- 
gard to their going in and out? 

52 How should dynamite, blasting caps and fuse be stored 
on the surface and in a mine? How should a charge be made 
up? What should be done in case of a missed hole? 

53 What pressure should be carried in the air mains? 
What size pipe is required to furnish air for one stoper drill? 
For four stoper drills? For five rock drills of the Ingersoll 
type? 

54 How should the water be taken care of in a mine hav- 
ing twelve levels, the shaft being 1,200 ft. deep? How often 
should the skip or cage, manway hoisting cable, etc.. be in- 
spected? What safety devices should a skip or cage have.' 
What lamps are used in metal mines? What means of com- 
munication should there be between the surface and the 
various levels of a mine? 

Such an examination covers a great deal of ground: 
the man that can answer all these questions correctly 
must kno-vr his business, and provided he can handle 
men, should make a good foreman. Some of the questions, 
however, are of such latitude that the examiner must 
necessarily be clothed with a great deal of discretion, and 
a full and complete answer to several of them would be 
acceptable additions to mining literature. 

Aiff-Hose Wiire^WSEadlaiag Tool 

A device lor winding wire tightly onto air hose, for the 
purpose of holding fittings, etc., is described' by H. B. 
ilcDermid-, as follows: 

Take any piece of tough wood (a piece of hickory ham- 
mer handle 6 to 8 in. long is excellent) and drill two or 
more holes' Vt to y^ in. in size through it, as shown in 
the sketch. 

Clamp in a vise the hose fitting and the end of the 
wire to be used. Put the hose in place, thread the wire 



neatly and quickly. The tool can be made in a minute or 
two by anyone, and with its use the blowing-out of hose \ 
fittings can speedily be made only a memory. 




TOOL FOIt WI.NDINU WIRE O.V AIR HOSE 

through the holes in the tool, as shown, and proceed to 
wind the wire around the hose and fitting as tightly as 
desired. Using two holes will usually give sufficient fric- 
tion on the wire to enable all the pull desired to be ob- 
tained ; in fact, care must often be u.sed to prevent pulling 
the wire in two. A dozen to twenty turns put on tightly 
in this manner will hold a "tail" or "buck" hose securely 
during the life of tlie hose, and the work can be done 

'In "American Machinist," Dec. 9, 1916. 
^Rrantford, Ont., Canada. 



v^- 




B 



^' 



McGINTY BLOCK FOR SELF-.\CT- 
ING INCLI.XES IN ROOM 



A "ilcGinty" block for use in handling cars on inclines, 
especially in coal mines, is described in Coal Age, Dec. 11, 
191-5. It could be made in any mine shop from material 
of the scrap heap and would often be used around metal 

mines. The McGinty 
block shown in the 
figure consists of an 
iron sheave A 15 in. 
in diameter and 4 in. 
wide, having a groove 
3 in. deep in its face. 
This sheave is sup- 
ported in a strong 
wooden frame B made 
of 3xl2-in. plank. An 
iron pin C li/o in. in diameter and 18 in. long passes 
througli the center of this l)lock and holds the sheave in 
place. The pin is prevented from turning by a 1%-in. bolt 
that passes through the sole-piece of the block and a hole 
bored in the pin, as indicated in the figure. A screw thread 
is turned on the upper end of the pin to receive the brake 
handle F. As this handle is turned, its shank bears down 
on a collar, or sleeve. E which surrounds the pin C and 
which, in turn, presses against the brake-block D, which 
serves to control the speed of the wheel and tlie descending 
cars. The pipe section E is 2 in. in diameter and about 6 
in. long. As shown in the figure, the McGinty, block is se- 
cured to the post by a strong iron chain. The post itself 
is set in hitches cut in the roof and floor and is tightly 
wedged. This post is moved up as the face is advanced 
everv 4 or 5 vd. 



Ifeeel BreaEage 
- By Caijkoll M. Cartek* 

Steel experiments, at the Carter Mining Co., Ohio 
City, Colo., proved of great service in reducing breakage 
to a minimum. It came about in this way: We were 
short of steel and noticed that the breakage seemed to be 
more than usual just at a time when we could stand it 
least. Acting on this hint, we took a new piece of steel, 
put a Lcyner shank and bit on it and sent it into the mine 
to start a drill hole. Immediately after the hole was 
started, the liit was brought out and resliarpened and 
sent in to start another hole. This process was kept up 
until the steel jumped in two when starting the 12th 
hole. Another piece of steel handled in the same manner, 
but in somewhat softer rock, started 16 holes before 
breaking. 

Then another new piece of steel was sent in to start 
a hole and afterward allowed to lie idle for three days, 
when it started another hole. Four pieces of steel wen 
used in these experiments, and by being permitted t n 
rest as stated, they started, averaging the four, 51 hol('> 
each before breaking. 

We now have on hand three times the amount of steel 
needed in any one day and use one-third of it every third 
dav and have next to no breakage. 



•1430 vine St., Denver, Colo. 



.Tauiuiiy I, 1916 THE EXGINKKinXG 6-= MINING JOURNAL 

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15 



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laJ 



Is Veff-stms Stasiaps 



By Ai.EXAXDEii McClarex* 

Witli each innovation in the metallurgy of gold and 
silver the operator is brought in contact with both the 
chemical and mechanical problems involved, the latter in 
many cases proving the more perplexing. A number of 
inventors and operators have brought out mechanical ap- 
pliances intended to reduce ores from primary crusher 
down to the consistency of slime (minus-200 mesh or 
thereabouts) in one machine and at one operation, but 
none as yet has been eminently successful. 

Each standard type of machine has its own proven 
scope of economy and usefulness, and attempts to use 
one to do the work of another have in most cases proved 
disastrous. It might have been only to the extent of a 
few cents per ton, yet a few cents per ton on the wrong 
side of the ledger is not without its weight on the monthly 
balance sheet of a mill handling a few hundred tons per 
day, or much less for that matter. 

The Texdexcy ix Gkixdixg Plaxts 

The tendency in modern reduction plants where an 
all-slime output is desired seems to be : By gravity 
stamps from primary crusher output down to No. 12 
ton-cap screen size : from stamp product down to minus- 
200 mesh with tube mill or some similar cylindrical fine 
grinder, with an interception of the minus-200-mesh 
product formed in the stamp battery, l)etween the latter 
and the ultimate grinder, the latter working in a closed 
circuit. 

Another combination that has found favor with some 
operators is the use of gravity stamps to reduce from 
primary-crusher output down to Ncx 4 screen, thence to 
the classifier, which takes out that portion of the stamp 
output passing 200 mesh, the oversize from the classifier 
going to a high-speed chilean mill equipped with 16- 
mesh screens, the product of which is classified, all coarser 
than 200-mesh going to tube or ball mills and issuing 
as a finished product, the last grinder also working in 
closed circuit. 

In nearly all cases we find the stamp hatterv doing 
work for which it is absolutely unfitted. The economy, 
comparatively speaking, of the gravity stamp, figuring 
on a basis of tons of output per horsepower used, has 
reached its maximum in crushing to 14 i"- From that 
point on down through the succeeding finer meshes, al- 
though the power used is constantly the same, the ratio 
of output to energy u.sed diminishes with rapidity. 

The high-speed ciiilean mill has found favor in a num- 
i)er of the large reduction plants as one unit in the 
jirocess of sliniiiig. in some cases being used between 
stamps and tulie mills. The slo\v-s])ccd type of chilean 
mill has, until recently, not been looked on seriously by 
any of the larger operators as a useful factor in ore 

Roberts Building. Los .\n- 



reduction and has never been allowerl i ' • _ _ . r 

place in the metallurgy of gold and silver. It has al- 
ways been regarded as a semi-primitive device on the 
order of an arra.stre, adapted only to amalgamation ami 
even that only on a small scale. These ideas more than 
likely emanated from reading accounts of the ancient 
machine — the wood, stone and rawhide prototype of what 
is today a well-constructed, dependable unit in the re- 
duction of some classes of ores. It was primarily de- 
signed and used as an amalgamator, but the improved 
ma(^hine of today has a far wider scope of usefulness and 
economy in the reduction of ores before or with cyanide 
than it ever did in the field of amalgamation. It has 
recently been used with gratifying results on the part 
of some of the larger and more successful operators, who 
have ]) roved conclusively that where a slime product is 
desired the slow-speed mill will deliver more per horse- 
power used, at a smaller cost of upkeep, than either 
the stamp, the high-speed mill or a combination of both. 

Slov\'-Speed Chilean Mills axd Stamps 

During the last eight j-ears I have been in touch with 
the operation of slow-speed chilean mills running m' 
varied characters of ore in different parts of the AV 
during wliich time a considerable amount of data br..- '^n:: 
gathered as to tonnage, sizes of product, power \ised and 
cost of upkeep; and therefore I feel justified in tht com- 
parisons here shown, checking up the resul'- obtained 
in slow-speed mills against some of t!;e modern plants 
using stamps. 

One instance we will take ?s that of a modern Western 
plant using stamps and tube mill, au all-slime product 
being desired. This mill consists of 10 stamps of 1,140 
11). each, classifier and tube mill. The battery output 
per 24 hr. is 80 tons of medium-hard ore through a 
No. 12 ton-cap screen. The ore is fed to the stamps 
at approximately 2-in. ring size, and of the battery out- 
put, about 25% will pass 200 mesh and is taken out 
by the classifier ahead of the tube mill. The tube mill, 
5x16 ft., working in a closed circuit, takes the remain- 
ing 75%. The 10 stamps use 34 actual hp., and the 
tube mill 40 h]i. Resorting to figures we find that with 
the stamps 1 hp. is equal to about 2.352 tons per 24 
hr., and that in the tube mill, 1 hp. is equal to 1,5 tons 
per 24 hr. Figuring the total output of the mill per 
24 hr, against the entire power used. 74 hp,. it takes 
] hp. to finish 1.081 tons. The foregoing does not in- 
corporate the ]iower used in classifying and transfcrriiiL: 
the pulp from one level to another, but merely the jiowcr 
actually used in stamping and regrinding. 

As an ultimate fine grinder we cannot very well, at 
present, get away from the tube mil! or some of the other 
cylindrical types of grinders. We can, however, pre- 
cede thcui with a unit that will do the duty of the stamp 
at a far less co.st per ton in ]iower and general \ipkeep, 
forming far more minus-200-mesh product, thereby less- 
ening the dutv of the tube mill i in fact. enai>ling a much 



16 



THE EXGIXEEEIXG &- MIXIXG JOUENAL 



Vol. 101, No. 1 



smaller one to do the work of finishing. As a matter 
of comparison, take the results obtained by me in Mon- 
tana on an installation of three 10-ft. Lane slow-speed 
mills grinding in cyanide solution. I take this par- 
ticular mill as a comparison because of the similarity 
of the texture of the ore treated and that of the stamp 
mill formerly mentioned. The three Lane mills are 
driven by a 40-hp. motor which also supplies power to 
drive two concentrators and a classifier, so we are per- 
fectly safe in assuming the actual power taken by each 
mill not to exceed 12 hp. The material fed to the mill 
is medium-hard quartz crushed to pass a 2-in. ring. The 
mills are operated at 8 r.p.m., and each one has a duty 
of from 48 to 50 tons per 21 hr. The average may be 
taken as 49 tons per day. Of the output of each of 
the mills, 40% will pass a 200-mesh screen. Overflow 
discharge to the height of 614 in. is used. Previous to 
tliis, an 8-in. discharge was used, which resulted in 
.)()% pasisng a 200-mesh screen. The lowering of the 
discharge was due to lack of agitator capacity and a 
surplus of leaching-tank space. 

Taking 49 tons as the average output of each mill, 
it will be seen that each horsepower is equal to a frac- 
tion more than four tons milled — nearly twice that of 
the stamp batteries, at the same time producing 15% 
more material of minus-200 mesh, thereby lessening the 
tube-mill duty to that extent. The difference and the 
material economy of the slow-speed mill over the stamps 
-hould be perfectly obvious. 

SxAiiPS Used with High-Speed Chilean Mills 

Another comparison may be made with a modern West- 
'•rn mill using stamps, high-speed Chileans and tube mills, 
in the order mentioned. A fairly soft ore is fed to the 
stamps at about li/s-ii*- =^'ze. The stamps are of 1,050 
!b. each and use 2.4 hp. per stamp. The daily output 
of each stamp tlirough a No. 4 screen is 81^ tons, or 
approximately 3.541 tons per hp., 20% of which passes 
a 200-mesh screen. The high-speed Chilean mills follow- 
ing have each a duty of 75 tons per 24 hr. through 16- 
mesh screen, of which 30% passes 200 mesh. These mills 
use 35 hp. each and are doing a duty of about 2.142 tons 
])er hp. In the combined two stages we find that one 
ton has been reduced at a power cost of 0.7489 hp. per 
ton and tliat about 44% of the total output passes 200 
mesh, leaving the remaining 5fi% to be finished in tube 
mills — 5x22 ft. — each handling about 95 tons and using 
(iO h])., in which the grinding of one ton requires 0.G314 
hp. (or 1 hp. equaling 1.583 tons) ; and in the entire proc- 
ess, not figuring the powcx necessary for such operations 
as classifying, elevating, etc., it takes 1.3803 hp. to make 
a fiiii-licd product of one ton, of which approximately 
95% passes a 200-mesh screen. 

I operated a 10-ft. Lane mill in California some time 
ago, reducing an ore much harder tlian that treated in 
tlic plant just described. This mill was operated at 8 
r.p.m. The ore as fed to the mill would pass a ll^-in. 
ring. The discburge from the mill was an unobstructed 
overflow (no screen used) set at a lieight of 7Vij in- 
above the die or track. The output was 40 tons per 
24 hr., of which a fraction over 53% ))assed a 200-niesli 
screen. In tliis installation tiic slow-speed mill con- 
sumed 12 hp., which figures approximately 1 hp. to 3.333 
tons' output per 21 hr. This was a hard, clean, siliceous 
ore with no talcy matter wliatever. John McDcrmott 



of Cue, Western Australia, says that on ores from the 
Chunderloo mine, Yalonginda, using a 10-ft. slow-spec'l 
mill, the output per 24 hr. was 36 long tons. Using a 
7 -in. unobstructed overflow discharge, 67% would pass a 
200-mesh screen and with a 9-in. overflow discharge. 
73.25% would pass a 200-mesh screen. 

A great number of similar instances might be given, 
in each of which the slow-speed mill has the best of it. 

I believe that some of the manufacturers of mills of 
the slow-speed type guarantee a cost of wear not to ex- 
ceed 4c. per ton treated. In this matter my experience 
leads me to believe that they are perfectly safe in the 
guarantee, as I have found it imder that on average ore. 
A total absence of the use of screens is no small item 
in their favor, both in the actual cost of the screens 
and in the time lost and the labor necessary in replacing 
them. 

Time Lost with Stamps axd Chileax Mills 

Some of the stamp-mill disciples put forward the 
argument that it takes a long while to renew the tires 
and track and that the mill is "dead" for that length 
of time. They refer to the stamp as being a continuously 
working unit. From experience I find that with a man- 
ganese steel track and a chrome-steel tire, 8,500 tons 
of hard ore can be treated before renewal of parts be- 
comes necessary. This, at the rate of 40 tons per day 
and 30 days per month, is about 212 days, or 7 months. 
Taking six days as the extreme limit of time necessary to 
replace the worn parts (it has been done in half that 
time), it will be seen that a fraction less than one day 
per month of time used is charged to repairs, and apart 
from the actual wear on tires and track there is no break- 
ages or wear of any consequence. 

A stamp mill is credited with the ability to run on, 
day, week, month and year, continually, but my stamp- 
mill experience, which covers a number of 3'ears, is filled 
with perspiring recollections of dies removed and re- 
placed, shoes bucked on, tappets set daily, stems re\ersed, 
screens changed and cams put on. Each of these many 
operations was attended by stoppage of at least a por- 
tion of the mill, and as each and every stamp is ex- 
pected to deliver its quota of tonnage, it was in ar- 
rears at the end of the month to the amount of the time 
each part was inactive. Several stems in a mill may be 
hung up for a period of time, while the others go thump- 
ing along making about as much noise as ever and the 
mill gets the credit for steady running. 

In sunnning up the foregoing, it will be found cor- 
roborative of some notable articles on "Slow-Speed Chil- 
ean Mill Practice" by J. B. Empson {Min. and Eng. 
^Vorld. Mar. 23, 1912); "Metallurgical Practice at Ha- 
cienda de la Union," by Francisco Navaraez {Eng. and 
Min. Journ., Nov. 28, 1908) ; "Some Characteristics of 
Chilean Mills," by Herbert A. ^legraw {Eng. and Min. 
Journ., Nov. 12, 1910) ; D. C. Bayldon, Mark Lamb and 
E. E. Carter, as well as a number of others. 



St. John dri Rry MlnlnRT Co. at Morro Velho, Brazil, does 
not uso amul^^'amation in recoverlnp gold, since the ore char- 
acter is such that mercury is easily flowered and the loss would 
be great. All of the gold Is fine enough to pass a lin-mesh 
screen and is easily dissolved In cyanide solution. Precipi- 
tation Is by fine zinc formed by pouring the molten metal 
over a moving, w.iter-cooled cylinder. The gold-bullion is 
refined and parted at the mine, flne metals being the ultimate 
product. 



January 1, 1916 



THE EXGINEERINCi &• .MINING JOURNAL 



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(C©BaceHaS5f'a.M®!ra Foipffia'vuilla.s 

Referring to the letter of Louis Janin, Jr., in the 
Journal of Nov. 27, a rather interesting point is raised 
as to the relative merits of arithmetic and algebra in 
solving mathematical problems arising from physical 
and mechanical operations. The choice seems to me 
rather a matter of temperament. Personally, I always 
prefer to work out such proljlems once for all in general 
terms, but others no doubt find it easier and more con- 
vincing to solve each case arithmetically as it arises. 
I knew a foreman of a metallurgical plant who would 
habitually spend half an hour or so calculating the dilu- 
tion of his pulp from measurement of pulp density, depth 
and diameter of tank, weight of a cubic foot of water, 
assumed specific gravity of mineral, and perhaps other 
factors, all this being done arithmetically, the final result 
being frequently incorrect, instead of applying the simple 

.V — P 
formula, Dilution = „ — , where P = pulp den- 

sity and .S' = specific gravity of mineral, and solving the 
problem in a few minutes. 

With regard to Mr. Janin's solution of the problem 
under discussion, it does not appear to me by any means 
clear or easily understood. After calculating the total 
gold in the original concentrates per 100 tons of ore. he 
■says: "The middlings will add to this 11.45 (0.35 ■ — 
0.055) = 3.37." This seems to be erroneous, as will he 
shown. It is true that in this instance the difference from 
the correct result falls well within the limits of experi- 
mental error in tests of this kind, but the basis of calcu- 
lation is nevertheless unsound, and in a case where the 
middlings carried considerable value the error might be 
of importance. 

Let us illustrate this in general tenus, using the same 
sjTnbols as in my note of Oct. 30, viz: 
C, .1/, T = Percentage weights of concentrates, middlings 
and tailings respectively. 
A', Y = Percentage weights of concentrates and tail- 
ings when middlings are eliminated. 
li, c, iii,t = Assay values of heads, concentrates, middlings 
and tailings respectively. 
X, y = Percentage of total values in concentrates and 
tailings when middlings are eliminated. 
Then the total value in the original concentrates per 
100 tons of ore is Cr, and the total value in the final 
concentrate is Xr, hence the difference, (X — C)c, rep- 
resents the amount added by eliminating middlings. Call 
this amount .1. Then since 

(• J- .1/ _{- r = X + r = 100 
and 

Cc -f Mm -^ 77 ='Xc + 17. = 100 h 
we mav obtain the following values for .1 .• 

.4 = (A' — C)c = M (m — i) + (A — C)t = 
100 (// ~t)c 
c — t 
Substituting the quantities given in the concentration 
tests, these expressions give the figures 3.-115, 3.40U5 and 



3.415 respectively, as against the figure 3.37 (more e.v- 
aetly 3.378) obtained by Mr. Janin's method of calcula- 
tion. 

A simplification of the formulas given in my note of 
Oct. 30 has been pointed out to me by S. Woodworth, a 
former assistant of mine. This is as follows : 
Since 

Ac + YL = 100 /( and 
r = ]^^t — /) 



and V = 



+ y = 

100 (c — 



100 



/ 



similarh 



lOtj (/( 



/) 



and 



_ 100 (c — h) t 
h (c — t) 



h {c — t) 

Using these simplified formulas, the percentage weight 
of final concentrates may Ije ol^tained by performing two 
subtractions, one multiplication by 100 and one division. 
The percentage of total values may then be calculated from 
this quantity by one more multiplication and one divi- 
sion. 

It is noteworthy that this solution of the problem is 
independent of the weights of the products ; nothing need 
be actually determined except the assay values of heads, 
concentrates and tailings, it being unnecessary to assay 
the middlings. 

Applying these simplified formulas, the quantities ob- 
tained in the test are as follows : 

X = 12.973 X = 94.652 

Y = 87.027 1/ = 5.-348 

Oakland, Calif., Dec. 4. 1915. J. E. Clexxell. 



I notice in your issue of Nov. 13 a brief description, 
with sketches, of the steel shaft timbering at Los Ocotes 
mine, Mexico, being an abstract from the article by R. 
11. Cromwell in School of Mines Quarterly. 

The design of this steel shaft timbering was made by 
me and modeled after the first design made and in- 
stalled under my direction at the American shaft No. 3 
of the Compailia Minera de Peiioles. The Mapami equip- 
ment was furnished by the United States Steel Products 
Co.. and the Los Ocotes by the Hamilton & Chambers Co. 

New York, Dec. 6, 1915. ' Cyrus Robixsox. 

;-% 
IRecoirdl Tosairaa^e f2oBSte<d 

Can you tell me the greatest tonnage ever hoisted from 
a metal-mine two-hoisting-compartment shaft in 8 hr., 
and for two successive 8-hr. .shifts ? I would like to know 
the world's record, the best record in the United States 
and the Southwestern record. M. R. Pekcy. 

New York. Nov. 30. 

[Will some of the Journal readers come forward with 
their local records, so that a l)ase line can be obtained? — 
Editor.] 



18 THE ENGIXEEEIXG &-■ iriNING JOURNAL Vol. 101, No. 1 

lUMiminminninimMiinnHuiimDuuiimmiiimiiiuimiiiiiuiu 

Plhioilog'rapSis froinm th<B FieM 



BmimiiniimiiimiMiraiinniiniiiiiiiiiiiiiiiininiiiiii«^ 




The u|>|>iT 



TWii IMI'oHT.A.NT .Mll.L.S <il' nil: . ( ]| ■ | Kit l<.\.\i;h;, .MICH, 
is tin- Triiiiouiilain mill iit Braron lllll. Ilie Iiih i-r l.s the Cliiimiiloii 



ill at I'-l-ciUl 



Jaimarv 1. 19 Ki 



THE EX(;i\KKinX(; d~ .mixixu jouhxal 



19 




riuiius liy C V. I'olIoL-k. Houiihton, Mich. 

IXTERIOR VIEWS SHOWING THE MACHINERY ARRANGEMKNT AT THE CHAMPION MILL, FREDA. MICH. 
The upper illustration shows one set of concentrating tables and the feed launders. The lower illustration i -• of a second 

table floor and the Jig: floor above 



20 



THE ENGINEERING &" MINING JOURNAL 



Vol. 101, No. 1 



i^rim 








times 



SyyOPSIS—The expenditure of £2,000,000 at 
the Bawdivin mines in upper Burma has returned 
£1,000,000 and developed 2,000,000 tons of rich 
lead-silver-zinc ore. The Burma Corporation now 
plans to mine in 1916 about Jf,oOO tons per month 
of lead-silver ore, yielding 1,500 tons of lead and 
lJfO,OoO oz. of silver. The ultimate scale of oper- 
ations will he at least 1.000 tons per day. 

Aiiproxiniately £2,000,000 has been spent in the devel- 
I'lii.'it and equipment of the Bawdwin mines of the 
; ■ -;:..' Corporation in the Northern Shan States of 
i.,i' . rjna; of this amount approximately £1,000,000 
ha? J. (itnvofl from old Chinese slags and high-grade 
ore su.'^'lti'i! ai tlio works first erected at Mandalay and 
later movtd to Nan, hi, about 13 mi. from the mines. 
The company's i.irrow-irage railroad, connecting with the 
Maudalay-Lashio iuiHih of the Burma Railways, has 
been shortened 5 mi. ' ^"<^ion of the new junc- 

tion at Nam Yao, tht • ■ il haul to the port 

of Rangoon is still f.i :, iii in? Burma Corpora- 

tion now owns 99.8 , ■ : shades and over 77% of 

the debentures of th.- Bt. Mi^-v. Ltd.. which began 

the active developme t of r.i i':()perties about the year 
1908; the Burma Corporati .\-' look over the operations 
in April, 1914. A 100-1^' ..ucentrating mill has now 
been completed, after elaborhte preliminary tests, and the 
ultimate scale of operation will embody a 1,000-ton plant. 
At the adjourned annual general meeting of the Burma 
Corporation in London on Nov. 8, R. Tilden Smith, 
pre.siding in the unavoidable ab.<ence of Chairman H. C. 
Hoover, stated that the ore reserves now amounted to 
at least 2.000.000 tons and that the undertaking bade 
fair to become one of the largest single lead-zinc-silver 
producers in the world, capable of turning out 75,000 
tons of lead, O.'j.OOO tons of zinc and 7,000,000 oz. of 
silver annually. 

NkW COXTIi.UTS XlXESS.VRY FOR TliEATIXG 
ZlXKIFliKOrs PlfODUCTS 

Mr. Smith directed attention to the fact that the war 
liad interfered with the arrangement the com])aiiy had 
for the disposal of its products, which were formerly 
-liipped to Gennany. He reviewed tlie reasons for the 
-lii])ment of the complex ores and products to Germany 
and the lack of sympathetic attitude on the part of .some 
of tlic officials of the British Empire. He said in jjart : 

The ore at the Burma mines, as in the case with the 
ores of tin Biol<en Hill mines, is of a complex nature; as a 
eon8ee4Uen< f, your company was on the outbreak of the war, 
at once facd with the difflculty of treatment, as. with one or 
iwo exceptions, only smelters controlled by German Inter- 
tats had made a special study of, and had erected plants 
capable of treatlHK. this class of ore. This is especially sur- 
prisinK in view of thi- fact that this ore is the cheapest raw 
material from which spelter can be produced, and it is upon 
it that the world will have to rely almost entirely for Its 
future production of this metal. The liiRgrest and richest 
known deposits of this ore occur within the- Hrltish Kmpire, 
ind the Germans, renllzInK its potentialities, have, during 
ibc last 10 years, built and adapted their plants to treat It, 
while the TCnKllsh smelters have continued to purchase clean 
zinc ores — sulphides or, preferably, oxides — at exorbitant 

•"Eng. and MIn. Journ.." Jnn. 28, 1915. 



prices and consequently could not and did not invest in their 
works the capital necessary to keep them up to date. I may 
mention that the Americans have not developed their smelt- 
ing methods in this direction. 

The powerful position secured by German firms in the 
zinc industry was brought home to me when Burma Mines 
entered into a contract for the disposal of a large quantity 
of its complex zinc ores, as not only did the Germans pur- 
chase the ore on very favorable terms to the mine, but they 
offered to make the company large cash advances at i'^'c in- 
terest. The consequence of this sale to Germany was that 
the ore had to be carried in German steamers, German coke 
to be purchased and loaded out as back-freight, employment 
was found for German labor, and German firms benefited by 
having control of the smelted products — from all of which 
you will appreciate the far-reaching benefit to the German 
Empire from this and other similar contracts. 

As a result of the war, realization on the complex 
zinc ores produced within the British Empire has been more 
or less suspended. On the basis of technical advice given to 
me and of my own commercial investigation, I have come 
to the conclusion that to enter successfully into the field of 
zinc smelting it is essential to start with an established 
works which has bought its experience under surrounding 
conditions; this is available in this country, and there has 
been made to the British Government a proposal which I 
hope will lead to the establishment of such a works, or or- 
ganization, as will deal with the principal zinc products of the 
Empire. I am doubtful whether this government will offer 
any encouragement; I have, however, no doubt that the 
Australian Commonwealth premier will. 

LACK OF CO-OPERATION OF BRITISH OFFICIALS 

A production of the above quantity of ore and metal will 
necessitate the expenditure of £1.500,000 per annum in wages 
and salaries, and these metals will represent an increase to 
the national wealth of approximately £3,500,000 per annum, a 
large proportion of which will be distributed among the 
miners, surface workers, staff, railways, steamship lines, 
metal workers, metal markets, and to shareholders in the 
company, all British. Considering the basis upon which the 
British Empire has been founded and the sentiment of unity 
upon which it is being maintained, it cannot but be a matter 
of surprise that the establishment of such great undertakings 
in remote parts of the Empire appears to be viewed without 
interest by British colonial ofllcials. Notwithstanding that 
they recognize the labor, courage and risk which have to bo 
incurred in order to bring these undertakings to a profitable 
result, they appear to think that the whole question under- 
lying this enterprise is for the purpose of profit 

In reality, this company is developing a new land of at 
least 10,000 sq.mi.. and of enormous potential possibilities. 

The relations between the government ollicials and the 
company are in the main uniformly satisfactory. Unfortu- 
nately, however, there is one exception, and it is an important 
one. I refer to this with extreme reluctance, and I do not 
for a moment wish to suggest that the superintendent of the 
Northern ,Shan States is prompted in his attitude by anything 
but the highest motives. He does not, however, appear to 
grasp the broad bearings of an enterprise of this nature in 
regard to the development of the economic condition of the 
states, but he appears to regard it as nothing more than a 
money-making concern. This undertaking does not differ 
from any other enterprise on business lines existing in the 
Empire. ... In the inception, it is to the disadvantage of 
the state that heavy conditions should be imposed and the 
highest charges should not be imposed. To attempt to se- 
cure for the state all the advantages and ignore all the dif- 
ficulties of an industrial enterprise is a policy which would 
certainly not be to the advantage of the state in the long 
run. In fact, when it comes to the matter of utilizing the 
important resources of the district, the attitude of an olficial 
should not be "What can you afford to pay?" but "What can 
I afford to sell for?" 

RE.StTLTS OF WATER-POWER HOLDl'P 

An Instance of the unnecessarily heavy charges is found in 
the question of the use of water power. An otilcial who has 
had charge of this question is endeavoring to obtain from us 
the uttermost farthing, without reference to the consideration 
due to us for the advantages we have brought to the dis- 
trict. We have felt this attitude deeply, and as a conse- 
quence were compelled to turn our attention to the uses of oil 
engines for the generation of electric power, and ultimately 



January 1, ID 16 



THE EXUINEEHING &^ MINING JOURNAL 



21 



compelled to go to Switzerland for the purchase of a 1,000- 
hp. Sulzer-Dies^ oil engine, which is now in the course of 

erection. 

Theodore J. Hoover, chairman of the technical com- 
mittee, reported that the ore reserves had been increased 
since Dec. 31, 1914, from 1,. 300,000 tons of proven and 
probable ore to 2,000,000 tons. The 250,000 tons of 
high-grade silver-lead ore had brought up the average 
assay of the whole, but it was interesting to observe that 
the assay of the 1,7.30,000 tons other than high-grade 
silver-lead ore also showed an increase of assay in all 
the metals. 

Tiger Tuxxicl Mist Be Driven 3,000 Ft. F.\rther To 
Eeach Chix.^max Orebody 

The Tiger tunnel has passed through over 3,000 ft. 
of wet, loose ground, which required timbering prac- 
tically throughout the whole length. It is expected that 
the next 3,000 ft. may be in better ground, and an aver- 
age monthly advance of about 300 ft. is anticipated. 

The Chinaman lode has been followed to within 50 ft. 
of the Tiger tunnel level, and if the orebody continues 
to that level in full strength, much more than 3,000,000 
tons of ore will be available above the tunnel. No fur- 
ther crosscutting of the Chinaman orebody will be at- 
tempted until the internal shaft has been finished to 
the Tiger tunnel level, and development will also be cur- 



the remaining 3,000 tons will be sent to the mill, jield- 
ing about 1,500 tons monthly of concentrates estimated 
to contain approximately 60% Pb, 54 oz. Ag and 10% 
Zn. These concentrates, mixed with the 1,500 tons of 
high-grade ore, will be roasted, sintered and smelted, to- 
gether with a small monthly tonnage of old Chinese slags 
still available, which will act as a factor of safety. Tip 
production from these operations is expected to amouni 
to 1,500 tons of soft lead and 140,000 oz. of silver per 
month, from which ample revenue sliould be provided 
for the costs of operating and all capital pxpenditui 
propo.sed for the year 1916. It is possible tliat there wi 
be a surplus above these expenditures, in view of tl 
high prices being maintained for the metals during t 
continuation of the war. 

Pira© Oil for Flotlaftar 
By C. F. Sheuwocd* 
The accoinpam ing test was made 
No. 2, with a view of determining i^ 
in the flotation of a zinc ore in w' 
disseminated in quartz The ci' . 
had a specific gravjtv of 0.'^' i". 
was made to simui; v 
by incorporating ' 



.- (Ml 
ror u-r 
vva> finely 
in color and 
•" . Lt'st an endeavor 

ulilioas in the slide machine 
and third classes as a cir- 



Firet operation 

Second operation - . 

Third operation 

Temperature 45 



Wilson Pine N'o. 1 

and Oleic 
Wilson Pine N'o 2 

(Orange) 
Wilson Pine No. 2 

and Oleic 

Temperature 45 



Lb. Oil 
per Ton 



T.^BLE 1 WILSON PINE OIL NO. 2 

Assay Zinc 

Middlings .\ssay Zinc 
.\ssay .\ssay Second and Cleaned 
Zinc Heads Zinc Tailings Third Passes Concentrates 
11.5 1.30 



12 3 170 

13 1 2 05 20 



47 



Remarks 
On first pass. 1 lb. Wilson pine oil 

No. 2. On second pass, 1 lb. 

oleic 
On first pass, 1 lb. Wilson pine oil 

No. 2. On second pass, 1 lb, 

oleic 
On first pass, 1 lb. Wilson pine oil 

No. 2. On second pass, 1 Id. 

oleic 



1 passes of 30 seconds' duration. -Acid added 1 minute before oil and agitated. 
TABLE 2. TEST OF TWO PINE OILS 
Heads Tailings 



asses per Ton per Ton Zinc 
3 2 2 12 2 

3 2 2 12.2 

3 2 2 12.2 

3 2 2 12 2 

C. Dilution 4 to 1 . .All passes of 30 s 



Zinc 

1.9 



Cleaner Cleaned 
Clean Tailings Concentrate 
2 12.7 52 2 ] 



15.0 
9.8 



4S-8 
53 3 

4S 2 



Froth 
Character 
client. Shews tend- Oil added, 1 lb. 
acv to drop min- 

ral 
client 



tiniarks 

I first pass. 1 lb. 



1 pine, on second 



On first pass, 1 lb. No 
pass, 1 lb. oleic 
llcnt. Show tend- 1 lb. on first pass and 1 lb. on second 
cy to drop mineral 

llent On first pass 1 lb. No. 2 pine, on second 

pass 1 lb. oleic 
.\11 acid added 1 minute before oil and agitated. 



tailed by the necessity of hoisting 150 tons per day of 
high-grade silver-lead ore from the internal shaft. 

From laboratory and tonnage tests it was decided to 
erect a 100-ton mill, consisting of crushers, jigs, tables 
and a slime-treatment plant. This 100-ton plant will 
fulfill the dual role of an opportunity for further large- 
scale concentrating tests, and will al.so have great value 
as an actual commercial-treatment plant, as it is ex- 
])ected to turn out a substantial tonnage of high-grade 
lead-silver concentrates. The smelting plant was pro- 
ducing in the first half of 1915 at the rate of 1,125 
tons of hard load jjer month, of which 45T tons was 
refined and sold in the open market, and the balance 
of about 670 tons monthly was shipped to London for 
refining and marketing. 

The program for 1916 includes the smelting of less 
of the old Chinese slags, which are becoming ex- 
hausted, and more high-grade ores and concentrates. Op- 
erations are to be on a basis of mining 4,500 tons of 
silver-lead ore, 1,500 tons of which will be smelted direct ; 



culating load. The method is not entirely fair, since 
the middlings obtained in these passes cannot be reground 
for the slide machine as they are in the mill, and the 
result is a building up of tailings of high value with 
every operation. The method of procedure was as fol- 
lows : 

In the first operation the regular charge of composite 
tube-mill and cone-tank discharge, assaying 11.5^,' 
zinc, was weighed out and run in the slide machine, 
using 2 lb. of acid and 1 lb. of the pine oil in the first 
pass. The concentrates from this pass were set to one 
side. Then 1 lb. of oleic oil was added and two more 
pas.ses were taken, the middlings to be incorporated in 
the heads of the second operation. The tailings from 
the three passes assayed 1.3% zinc. 

As the second operation, a charge of regular f^ed, plus 
the second- and third-pass middlings from the first oper- 
ation, was mixed as samples, giving heads for this opera- 
tion a.ssaying 12.3% zinc. This was run in the machine. 



•Mining Engineer, Butte, Mont. 



22 



THE ENGIXEERTNG 



:mining journal 



Vol. 101, No. 1 



usin.ij 2 lb. of acid and 1 lb. of the pine oil in the first 
pass. The toiuentrates obtained from this pas-s were 
added to those obtained on the first pass of the first 
ojjeratiou and set aside. One pound of oleic oil was then 
added and two more passes were taken, middlings to be 
added to the heads for the third operation. The tailings 
resultinir from these three passes assayed 1.7% zinc. 

As the third operation, a charge of regular feed was 
used, plus the second- and third-pass middlings from the 
first operation, assaying 1:>.1% zinc. This was run in a 
machine, using 2 lb. of acid and 1 lb. of the pine oil in 
till" first pass. The concentrates obtained from this first 
pass were added to those obtained from the first pass of 
the first and second operations and set aside. One pound 
of oleic oiJ was then added and two more passes were 
taken. This proihu-t was assayed as middlings and gave 
20% zinc. The- tailings resulting from these three passes 
assayed 2.0.")% ziuv'. The concentrates from the first pass 
(if the three operations were then cleaned in two passes 
without any addition of oil or acid. The cleaned con- 
centrates assayed 27.7% zinc an'^ the cleaner tailings, 
10.6% zinc. The three operatioi - were conducted at a 
temperature of 45° C, and at a ,; i,-,.,, , if four of solu- 
tion to one of ore. 

From the data recorded i< c the heads were 

built up from 11.5% to i:i. ■, the addition of 



cost $2,000,000. The work will be rushed witii all po.s- 
sible speed, and the plans call for its completion by Sept. 
1, 191{). 

The decision to erect this plant was reached some 
weeks ago, after the results of the experimental plant at 
Anaconda had proved beyond question the success of the 
process. The new refinery will be near the copper smeltery 
at Great Falls and will use the wet process developed dur- 
ing the past year. When in full operation it will require 
appro.ximately ;50,000 hp. The electricity will be fur- 
nished from the new Volta plant of the ^lontana Power 
Co., situated a few miles below Great Falls, on the ilis- 
souri River. 



The great importance which the flotation system is as- 
suming in the eyes of the metallurgical profession is 
directly reflected in the great number of patents being 
taken out dealing with variations of the system and ap- 
paratus. The last few months have shown an appreciable 
increase in patents applied for and granted. Many of 
them, of course, will never lie of any service, but some 
of them are no doubt destined to become monumental in 
the art.- At the present stage no one can effectively sep- 
arate the two classes, so it is probably worth while to re- 




•SKETCHKS OF SOME NEW FLOTATION MACHINES 
''''«• 1 — A- H- HlKcin.x frother. Fig. 2 — Higgins and Stennlng machine. Fig. 3 — T. M. Owens frother 



ihe middlings, and the tailings also increased in as.sav 
value from 1.3% zinc to 2.0.")% zinc. This was due 
entirely to the absence of regrinding the middlings, as 
would be the case in practice. Tiie froth obtained in all 
' a.<c> wa- excellent, and the oil a])pears to be thoroughly 
-atisfactory for use in flotation practice. A test of two 
\nrieties of pine oil was also made, data of which are 
ii|)pended. 

Anaconda Zinc Plan& Be^uaim 

l!l Jl i: {"()liltKSl'()NI)K.\(K 

With Vice-I'residciit Hcii M. 'I'liayer driving the team 
iiid with IVesident John F. IJyan holding the plow han- 
llcs, ground was broken for the new zinc-reduction plant, 
apacity 70,000,000 lb. of zinc per annum, estimated to 



view .some of the promising ones briefly. Under date of 
Oct. .-), 1!)I5, U. S. I'at. No. 1,155,810 was granted to 
A. H. Iliggins, of London, for a new design of flotation 
apparatus. The device consists essentially of a chamber 
in which agitation is carried on and into which air is iu- 
ti-oduced through a pipe, without having recoui'.se to the 
surface air. The air and ]nil]) are thoroughly mixed by 
the agitatoi-, and tlie u])pcr pai-t of the chamber is pro- 
vided with a series of baffles in order that the surface may 
be comparatively quiet and the froth bearing the minerals 
may be effectively skimmed oil'. One form of the api)ar- 
atus used is shown in Fig. 1. 

Under date of June 15, 1015, Henry Lavers, of Vic- 
toria, Australia, was granted U. S. Pat. No. 1,112,821. 
This patent relates to a jiiwess of separating mixed sul- 
])liidc ores. The inventor shows that it has been |)revi- 



January 1, 1916 



THE ENCJINEERING &' MINING JOURNAL 



23 



ously pointed out that if a salt of chroniiuni is introduced 
ill solution into the circuit liquors of flotation process, or 
if tlie material to be treated is subjected to the action of 
chromium salts, it is possible to obtain a flotation product 
relatively high in certain sulphides and a residue rela- 
tively high in other sulphides. The inventor now finds 
that in treating finely pulverized material containing 
mixed sulphides, partiiularly good results can be ob- 
tained if the pulp, during digestion with the chromium 
salt or during flotation treatment with the chromium 
salt, is slightly alkaline. A further feature of the in- 
vention is that if the finely pulverized ore containing 
mi.xed sulphides suspended in slightly alkaline water is 
subjected to the agitation-froth process with the use of 
a suitable frothing agent, a flotation product can be ob- 
tained containing the bulk of the metallic sulphides which 
are thus separated from the gangue, which mainly sinks. 
If, then, the concentrates be again treated by the flota- 
tion process, still in alkaline circuit and with the addi- 
tion of the salt of chromium, it is possible to obtain a flo- 
tation product relatively high in certain sulphides and 
a residue relatively high in other sulphides. In this way 
it is possible to separate, in a lead-zinc-irou ore, concen- 
trates containing a very high percentage of zinc and very 
little of the lead and iron, the latter being left in the 
residues. 

A patent under date of Oct. 5, 1915, bearing the 
number, 1,155,815, has been issued to A. H. Higgins 
and W. W. Stenning, both of London, embodying the 
principles of the previous Higgins patent, with some 
adilitioiial ones. The accompanying drawing. Fig. 2, 
shows clearly the arrangement of the apparatus, which 
does not require any further explanation. Another ap- 
paratus patent. No. 1,155,836, has been issued under the 
same date to Thomas M. Owen, of New South Wales, 
Australia. In this apparatus the air is also introduced 
into the bottom, agitated and flotation and skimming 
done from the top. The accompanying illustration. Fig. 
3, shows how the machine is built. 

Then a patent issued to the same man, under No. 
1,157,176, is based on the discovery that small quantities 
of certain manganese salts applied to the slimes alter or 
modify their behavior in flotation treatment so that the 
sulphides may be obtained separately; that is to say, sep- 
arate products may be obtained, each of which respec- 
tivfly is relatively high in one particular sulphide and 
relatively low in others. This question of separate flota- 
tion of different sulphides seems to be receiving a great 
deal of attention. 



111 eoiineetiou with the Second Pan-American Scieutitic 
Congress, the offices of the United States Coast and 
Geodetic Survey at 205 New Jersey Avenue S. E., will be 
open to the public from 9 a.m. until 5 : 30 p.m. every 
(lay, except Sunday and Jan. 1, from Dec. 27 to Jan. 8. 
Visitors will be afforded an opportunity to view the 
methods and results of the work of this bureau, and there 
v.ill be someone on hand at all times to act as guide and 
to explain the exhibits. 

Tliere will be shown nautical charts, survey plats and 
records, diagrams and publications. The exhibit will 
also include the surveying- instruments used by this 



bureau, particularly those which have been designed in 
it. A tide-predicting machine, designed and con-tructed 
at this office, will be on exhibition, and visitors will have 
an opportunity to see this machine in operation, making 
actual predictions for u.se in the next tide tables. 
Attached to each exhibit will be a short explanation, 
written in both English and Spanish. 

E.IecGs'lc Hipona SmriKBllftiini^ aft 



In a recent report on "Electrothermic Smelting of 
Iron Ores in Sweden," i.ssued by the Canadian Depart- 
ment of Mines, a resume of a year's smelting at Troll 
hattan is given. During the year 9,381,980 kg. of lump 
ore, 2,182,575 kg. of concentrates and 1,001,155 kg. of 
limestone were .smelted with 2,634,355 kg. (175,623 hi.) 
of charcoal and a gross electrode consumption of 34,039 
kg., producing 7,333,995 kg. of pig iron. This is a con- 
sumption of 1,279 kg. of lump ore and 299 kg. of con- 
centrates per metric ton of pig, fluxed with 136 kg. of 
limestone and reduced with 359.2 kg. of charcoal and 
4.64 kg. of electrbde. 

The furnace was operated 7,970.6 hr. and shut down 
for 789.4 hr. The entire current consumption was 15,- 
838,250 kw.-lir., or 2,160 kw.-hr. per ton of iron, includ- 
ing that used for lights and motors, or 2,116 for the 
furnace alone. The daily output was 20.08 tons, or 3.05 
tons per kw.-year of powe f6r the furnace only, 2.98 
tons per kw.-year of total power and 2.44 tons per year 
per kw.-year paid for (including transformer losses, etc.). 

The iron contains: Si, 0.05-1%, usually 0.3%; Mn, 
0.15-0.20%,; S, 0.005-0.015%: P, 0.020." During the 
time covered by the report the hearth and roof were re- 
lined and the furnace reheated. 

111 the 84tli annual report of the St. John del IJey 
^lining Co., of Brazil, attention is called to the fact that 
.several attacks had been made on the company in the 
newspapers of the capital of the state of ilinas, as well 
as those of the federal capital, affirming that the cyanide 
and waste products from the ^lorro Velho mine, passing 
into the Rio das Velhas, have resulted in the destruction 
of fish in that river. In order to ascertain the truth of 
this matter, detailed experiments were instituted and car- 
ried out to ascertain whether fish would be art'ected by 
the extremely low-grade solution represented by the mix- 
ture of the Morro Velho waters with those of the Rio 
das Velhas. The strength of this solution was estimated 
and made and checked by the actual samples taken from 
the river below the point where the tailings from the 
mill enter that stream. Comparative results were made 
by placing fish in this solution and in ordinary stream 
water that was not contaminated. It showed clearly that 
the fish were not afl'ected in any way by the solution. 

It was also stated that the white salt deposit occurring 
along the river banks, resulting from the decomposition 
of the moist sands from the mill, were poisonous, and 
that this was the cause of the trouble. An analysis of 
this salt was made many years ago, but it was thought 
advisable to investigate it further, and it has been dem- 
onstrated that the sulphates of iron and magnesium, of 
which it consists, cannot be detrimental to the fish. 



24 



THE ENGINEERING &- MINING JOURNAL 



Vol. 101, Fo. 1 



The probabilities are that the disappearance of fish in 
the Rio des Yelhas is mainly due to their wholesale de- 
struction by people adopting the illegal use of dynamite 
as a means of obtaining fish, thus destroying not only the 
fish, but also the spawn. The diminished rainfall in the 
past years has also had some infiuence on the disappear- 
ance of the fish, many of which are migratory. The Rio 
Paraopeba, which is of about the same size as the Rio 
das Velhas and, like it, a tributary of the Rio San Frai>- 
cisco, has also, from the two causes mentioned, suffered 
equally in diminution of fish, in spite of the fact that 
there are no mines discharcring their tailins^s into it. 



The Treasury Department at Washington is investi- 
gating the recent issuance Ijy prominent companies of 
stock without par value. The purpose of the inquiry, 
according to the Tribune, is to learn if corporations are 
seeking by this method to avoid payment of the war- 
revenue measure passed in 1914, imposing a tax of 5c. 
a .share on issues of new stock with a par value of $100 
or fractions thereof. A bill may be introduced in Congress 
to amend the law, levying a tax on all new issues of stock 
without reference to the par value. 

Since the enactment of the special revenue-tax law, 
four big companies have is.sued stock of no par value, 
from which no tax can be collected. Among the corpora- 
tions that have issued securities of this character are the 
Kennecott Copper Corporation, with 1,148,000 shares and 
the Cerro de Pasco Copper Corporation with 1,000,000 
shares. 



HEW FATEMT^ 



ArisfDjaai Wa^e Scales 

The following scales of the prevailing rates of wages 
at Arizona copper mines just before the outi>reak of the 
Clifton-ilorenci .strike are of interest: 

aKIZONA SLIDIXG-SCALE of MIXERS' WAGES. AUGUST, 1914 



Miners-Machine 



13c. 14c. 15c. 16c. 17c 



.50 $3.57 S3. 65 $3.72 $3.80 $3.90 $4.00 



Old Dominion 

Copper Queen $3.50 

Calumet & .\rizona. 3.50 
United Verde 

Miners-Shaft 

Ray Consolidated 

Old Dominion 

Old Dominion.. 





3.00 


3.07 


3.15 


3.22 


3.30 


3.40 


3.50 




3.50 


3.65 


3.75 


3.90 


4.00 


4.15 


4.25 




3.50 


3.65 


3.75 


3.90 


4.00 


4.15 


4.25 


3.ti() 


3.75 


3.85 


4.00 


4.10 


4 25 


4.35 


4.50 


3 KO 


3.75 


3 85 


4.00 


4.10 


4.25 


4.35 


4.50 


3.50 


3.50 


3.50 


3.75 


3.75 


3.75 


4.00 


4.00 



Calumet & .Aiizona. 3.75 3.85 4.00 4.10 



United Verde. . - 

Chuck Tenders 
Calumet & .\ri2011a. 
United Verde 

Carmen and Muckers 

Ray Consolidated 

Old Dominion 

Calumet <fc .\ri20na. 
United Vtrde 



4.00 4.07 4,15 4.22 4.30 4.40 4.50 

4.40 4.50 4.65 4.75 4.90 5.00 

4.40 4.50 4.65 4.75 

4 35 4.50 4.60 4.75 

4.25 4.25 4.50 4.50 



4.00 



4.00 4.00 



3.50 3.65 3.75 3.90 



3.25 3.35 3.50 3. 
.... 2.75 2.75 2.75 



Timbermen 

Ray Consolidated 4.00 4.07 

Rav Consolidated 3 50 3.57 

Miami 4.00 4.15 

OldDomjnion 4.00 4.15 

CopperQueen 4.25 4.35 4.50 4.60 

CopperQueen 4.00 4.10 4.25 4.35 

Calumet (t Arizona. 4.25 4.35 4.50 4.60 

Calumet & Arizona. 3.75 3.85 4.00 4.10 

United Verde 3.50 3.50 3.50 

Blacksmiths 

Ray Consolidated 4.50 4.57 

Ray Consolidated 4.25 4.32 

Ray Consolidated 4.00 4.07 

Miami 5.00 5.00 

Miami 4.50 4.50 

OldDominion 4.25 4.25 

CopperQueen 5.00 5.10 5.25 5.35 

CopperQui-en 4.50 4.60 4.75 4.85 

CopperQueen 4.25 4.35 4. ,50 4.60 

Calumet &.\rizona. 4.50 4.60 4.75 4.85 

Calumet* Arizona. 4.25 4.35 4.50 4.60 

United Verde 4.00 4.00 4.00 



4.15 4.22 

3.65 3.72 

4.25 4.40 

4.25 4.40 

4.75 4.85 

4.60 4.60 

4.75 4.85 

4.25 4.35 

3.75 3.75 



4.15 
5.00 
4..W 
4.25 
5., 50 
5.00 
4.75 
5.00 
4.75 
4.25 



5.15 
4.65 
4.40 



4.85 
5.10 
4.85 
4.25 



4.30 4.40 4.50 

3.80 3.90 4.00 

4.50 4.65 4.75 

4. .50 4.65 4.75 

5 00 5.10 5.25 

4.75 4.85 5.00 

5.00 5.10 5.25 

4. .50 4.60 4.75 



4.80 
4 55 
4.. 30 
5.25 
4.75 
4.50 
5.75 
5.25 
5.00 



4.90 5.00 

4.65 4.75 

4.40 4.50 

5.40 5.50 

4.90 5.00 

4.65 4.75 

5.85 6.00 

5.35 5.50 

5.10 5.25 

5.35 5.50 



United States patent specifications listed below may be 
obtained from "The RnRineering and Mining Journal" at 25c. 
each. British patents are supplied at 40c. each. 

ACETYLENE-GAS APPARATUS. Adolf Messer. Frankfort- 
on-the-Main. Germany. ^U. S. No. 1.163,939; Dec. 14, 1915.) 
„. ALLOY — Process for the Hardening of Compositions of 
Nickel and Copper. Peter John Archibald Douglass, Dart- 
mouth. N. S., Canada. <V. S. No. 1.163,813; Dec. 14. 1915.) 

AMMONIA SATURATOR. August F. Hilleke. Enslev. Ala., 
assignor to Semet-Solvay Co., Solvav, N. Y. (U. S. No. 1,163.- 
753; Dec. 14, 1915.) 

AMMONIUM SULPHATE — Improvements Relating to the 
Recovery of Ammonia In the Form of Sulphate from Gases. 
T. Rlgby, Dumfries, .Scotland, and Wetcarbonizing Ltd., Lon- 
don, Eng. (Brit. No. Is.."i59 of 1914.) 

AMMONIUM SI'LI'HATE— Process of Producing Sulphate 
of Ammonia, .\ugust F. Hilleke. Enslev. .\Ia., assignor to 
Semet-Solvay Co., Solvay, N. Y. (U. S. No. 1,163.752; Dec. 14. 
1915.) 

CALCIUM CYANAMIDE — Process of Making Calcium Cyan- 
anUde by the Action of Nitrogen or Calcium Carbide. Emilto 
<;\il. Rome, Italy, assignor to the Arm of Ing. Harzano' & 7m- 
n;irdo, Rome, Italy. ( U. S. No. 1,164,087; Dec. U, lai.'.,) 

cVAiViniNG — Precipitation Device. Bruno R. Koerlng. 
Detrtiit. Mich., assignor to Koerlng Cyaniding Process Co., 
Detroit, Mich. (U. S. No. 1.163,829; Dec. 14, 1915.) 

OH.. — Process for Redistillation of Products of Destructive 
Distillation. Harold .M, chase and .lohn L, Grufllln, Wilming- 
ton, N. C, assignors to National Wood Distilling Co., Wilming- 
ton, N. C. (U. .S. Nos. I.I(;i,S44 and 1,162.036; Nov. 30, 1915) 

PHOSPHATE COMPO.'-ITIO.V and Process of Calcining 
Phosphates. Spencer B. Newberry and Harvev N. Barrett, 
Baybrldge, Ohio. IV. S. No. 1,162.802; Dec. 7, 1915.) 

PRO.SPECTINO— Location of Ores In the Subsoil. Conrad 
Schlumberger, Paris, France. (U. S. No. 1,163,469; Dec. 7, 
1915.) 

STEEI^Process of Making .Steel. Alva C. Dinkey, Pitts- 
burgh, Penn. (U. .S. No. 1.162,756; Dec. 7, 1915.) 

TIMBER TREATMENT— Method of Impregnating Timber. 
Grant B. Shipley. Pittsburgh, Penn. (U. S. Nos. 1.168,270 and 
1.163.271; Dec. 7. 1915.) 

ZINC — Process of Recovering Zinc from an Acid Sulphite 
Solution. Charles S. Vadner, Salt Lake City, Utah. (U. Si No. 
1.163.286; Dec. 7, 1915.) 



Boilermakers 
Ray Consolidated.. . 
Ray Consolidated... 

Miami 

Miami 

OldDominion 

Copper Queen 

CopperQueen 

Calumet *t .\rizona. 
Cahirnet it .\rizona. 
Calumet iV .Arizona. 
United \'( rde 



4.00 
3.75 
4.00 
3.75 



Ele 



Ray Consolidated 

Ray Consoli<lated 

Miami 

Miami 

Old Dominion (Armature Winder) 
Old Dominion (Underground) 
Old Dominion (Surface) 

CopperQueen 4.00 

CopperQueen 

CopperQueen 

Calumet »t' .Arizona. 
Calumet .X: .Arizona. 
Uniti<i ViTrte 



3.75 



3.85 
S.-W 3.60 
4.25 4.35 
3.75 3.85 
. . . . 3.75 



4.25 
3.80 
4.25 
3.. 50 
4. .50 
4.25 
4.00 
4 . 25 
4.00 
3.75 
4.00 



4.25 
4.00 
4.25 
3.75 
4.50 
4.25 
4.00 
4.25 
4,00 
3.75 
4.. 50 
4.00 
3.75 



'Machinists 

Ray Consolidated.. 

Miami , , 

Miniiii..., 

Old Dominion 

C'«)pper Queen 

Copper Qu<H>n 

Copper Qi n 



4.32 
3.87 
4.25 
3.50 
4.50 
4,, 35 



4.. 35 4. 50 



4,32 
4,07 
4.25 
3.75 
4.50 
4.25 
4.00 
4.35 
4.10 
3.85 
4.60 



Calumet* Arizona. 
Calumet* .Arizona. 
Calumet * Arizona. 
United Verde 

Watchmen 

Miami 

Miami 

Miami 

Calumet* Arizona. 
Calumet * .Arizona. 
Unili-d Venle 



4.25 
4.00 
3.75 
3.50 
4.00 
3.75 
3.50 



3.85 
3.60 
4.25 



4.. 50 
4.25 
4.25 
4.50 
4.25 
4.00 
3.75 
4.25 
4.00 
3,75 
4,25 



4.40 
3.95 
4.25 
3. 50 



4.47 
4.02 
4.40 
3.65 
4.65 
4.60 
4.35 



4.2.'! 
4.00 
4.25 



4.40 4.47 

4.15 4. -22 

4.25 4.40 

3.75 3 90 

4.50 4.65 

4.25 4.40 

4.00 4.15 

4.50 4.60 

4.25 4. 35 

4.00 4.10 

4.75 4.85 



4.32 4,40 

4. .50 4. .50 

4.25 4,25 

4.25 4.25 

4,00 4,75 

4.35 4. .50 
4.10 



4.47 
4 . 6.5 
4.40 
4.40 
4.85 
4.60 
4.35 
4.10 



4.10 
4.50 
3,75 



4,75 



4,65 
3,90 
4,90 
4,85 
4, ,50 4,(iO 
4,75 4,85 
4,35 4,50 4,60 
4.10 4.25 4,;t5 
4.25 4.25 4.50 



4,75 
4,50 
4.50 



4 30 
4.50 
4,00 
4 , 75 
4,50 
4.25 
4.75 
4.50 
4.25 

5 00 



4,25 
4,00 
4.50 



4.25 4.25 4.25 4.40 4.50 
4.00 4.00 4.00 4.15 4.25 
3.25 3.40 3..'» 



4.65 4.75 
4.40 4.50 
4.65 4.75 
4.15 4.25 
4.90 
4.05 
4,40 
4,85 
4,00 



4,75 
4 .50 
5,00 
4.75 



3.75 4.00 4.00 4.00 



4.75 4.85 5.00 

4.50 4.60 4.75 

4.25 4,35 4,50 

4,75 4,85 5,00 

4, .50 4,00 4.75 

4.25 4. .35 4.50 

4.50 4.75 4.75 



4.65 
4.40 
3.65 



3.25 3.25 

3.26 3.35 3.50 3.60 3.75 

3.10 3.20 3.30 3.40 3. .50 

. . 3,25 3.25 3.25 3.60 3.60 3.50 3.75 3.75 



3,75 
4 , 25 
3.90 



January 1, 191G THE EXGINEERING d^ MINING JOURNAL 

^llllllllliiii nil II iiiiiiii Ililiiiiiill n iiiiiiillililllillllliillllilllirilllliiiiiiiiiiiiiiii iliimiiiiliiiiiiiiiiii iiiiiiiiiiiiiiiiiiiiiiiiiiinimiimiiiiiiiiiiiiiiiimmriiiiiiiiinii iinmiiiiiiiiiiiiiimiiiiiiiin 



25 



gress is coiitemplatiiig a step to )uoiin]iolizu the tin in- 
dustry of the republic. The sugf/jestiou is to grant a 
2.5-year oontraet to Berry and Lutweiler to produie all 
the tin of Bolivia, authorizing also the exelusive use of 
hydro-electric jjower for tin smelteries. 

It is almost impossible to believe that a step of this 
kind can be taken anywhere in the world, much less in 
Bolivia, where the mining industry has always enjoyed 
a full measure of liberty. Besides being an outrageous 
restriction upon an industry, the project is not based 
on sound jttdgment, since electric tin smelting has not 
yet been demonstrated to be a commercially feasible 
process on any broad scale. 



iiiniiiiiiiiiiiiiiiiiNiiiiiiiiiiHiniiiiiiii iiiiiinininiiiiiniini iiiiiiiiiiiii iiiiii iiiiiniiiiiiiiiiiiiiiiiiiiiiinninniiiiiiiiiiiiiiiiuiiiiiiiiiiiiiiiiiiiiiiiiiiiniiiiiinMiiii iiiuiiniiiiiiiiiiiiiiiiniiiiiiiiiiiiiiiinwiniiiiiiiiiiM^^^^^^^^ 

FaBa^Aimes'acsiEa ScaeimtlaiSc 

There is being held in Wasliington this week a very 
notable meeting — the second Pan-American Scientific 
Congress — the purpose of which is to draw together rep- 
resentatives of all kinds of scientific bodies in North 
and South America for interchange of ideas, the dis- 
cussion of problems and, in general, getting better 
acquainted. The last is perhaps the most important 
thing of congresses of this kind. 

The second Pan-American Scientific Congress is being 
londucted under tlie auspices of the Department of 
State and to a considerable extent is a diplomatic func- 
tion. Its membership comprises the official delegates 
appointed by the several nations participating, the dele- 
gates of bureaus, societies, etc., the members of com- 
mittees officially appointed and the writers of papers. 

Section VII — Mining and ^letallurgy — is one of the 
leading divisions of the congress, naturally, owing to the 
more intimate association of North and South America 
in the exploitation of mineral wealth than in any other 
branches of commerce and industry. The list of papers 
that are to be read in the meetings of this section is of 
a high order. 

The congress was opened on Dec. 27 and will close on 
Jan. 8. Mining men who can visit "Washington to 
attend it will find it worth while to do so. 

Tim. SmaeMaim^ Sift Peipftlh Ainmlbos^ 

The new tin-smelting plant of the American Smelting 
and Refining Co. will shortly go into operation, smelt- 
ing Bolivian ore. This is an extraordinarily interesting 
development in metallurgy, not only for the reason that 
it will inaugurate tin smelting in the United States, 
but also because it will introduce some radically new 
ideas in the new metallurgy of tin. 

This new enterprise of the American Smelting and 
Refining Co. is a practical demonstration of how to se- 
cure South American business that heretofore has gone 
to Europe; namely, by doing something tangible and 
making it more advantageous for the South American 
people to trade with the United States than with Europe. 

Besides building this plant and pitrchasing South 
American ores, the American Smelting and Refiniiig Co. 
is also helping to finance the miners of South America 
by making to them liberal advances immediately upon 
shipment of their ore. This is how the United States 
has got to go about it if it is going to build tip a South 
American trade. The South Americans can not buy 
from us tmtil we buy from them. It is to be hoped that 
the American Smelting and Refining Co. will be so suc- 
cessful in its new enterprise that it will be able to ex- 
tend its present i)lant and increa.se the business. 

Just as we were noting the first steps in tin smelting 
under conditions so satisfactory, a communication has 
arrived from Bolivia announcing that the National Con- 



le^iiecti2'Oil5^Uac ^asac Irs'odl'iiacttaoira 

Reference has previously been made in the Journal to 
the promise of a development of the hydrometallurgy- 
electrometallurgy of zinc as a commercial art. The prom- 
ise has already become a prospect. There is to be such 
an art. The magiiittide that it will attain and its ef- 
fect 111)011 the zinc industry of the world remain for the 
future to tell, but that it is going to have an early and 
important influence is not to be doubted. Two great 
companies are already far advanced with their plans. 

The first of these — the Consolidated Mining and Smelt- 
ing Co. of Canada — is about completing at Trail, B. C, 
a plant that is planned to produce about 12,000 tons 
of spelter per annum. The source of the ore will be 
the Sullivan mine — owned by this company — which is 
the largest deposit of zinkiferous ore in Canada. The 
Trail plant is expected to be in operation early in 1916. 
At Welland, Ont., the Weedon ilining Co. has been pro- 
ducing about five tons of electrolytic spelter per day 
for several months past. These Canadian plants are com- 
mercially equivalent to American capacity, for they sup- 
ply a market that heretofore has been sujiplied by the 
United States. 

Of more importance is the project of the Anaconda 
Copper Mining Co., which, after operating an experi- 
mental plant of five tons' daily capacity, broke ground 
on Dec. li for a big plant at Great Falls, Mont., that 
place having been chosen manifestly on account of its 
cheap power and the desirability of hitching such a plant 
as closely as possible to the busbar of the power station. 

We are able to state authoritatively that the Great 
Falls plant is designed for the production of 3.5,000 tons 
of spelter per annum, treating about 140,000 tons of 
concentrated ore, which will be derived from about ;)")0.- 
000 tons of run-of-mine ore. The run-of-mine ore will 
be concentrated at Anaconda, the concentrates being 
passed on to Great Falls. The cost of the Great Falls 
]ilant is estimated at $1,500,000 to $2,000,000. Assum- 
ing the higher figure, this will be aiunit $11: per annual- 
ton of capacity in terms of concentrated ore. This is 
less than the cost of a modern zinc smeltery. 

We have previously remarked that with existing con- 
ditions electrolytic spelter can be made profitably in any 



26 



THE EXGIXEEEING &-■ :MINING JOURNAL 



Vol. 101, No. 1 



reasonable way. The Anaconda management is of the 
opinion that it can continue to make it out of Butte ore 
at Great Falls, no matter what happens in the .spelter 
market after the war. There are some specially favor- 
able conditions in this case that lend color to that hope. 
The Great Falls plant is expected to be in operation 
late in the summer or early in the fall of 1916. 

Here we ha\e coming in two new plants a production 
which, added to that of Donora, will be about 25% of 
the total American production in 1914. The electroh'tic 
spelter will 1)e of high grade if the metallurgists want 
to make it so. Brunner, Mond & Co.. in England, have 
for years offered electrolvtie spelter guaranteed 99.95% 
Zu. There is no reason why any electrolytic spelter should 
not be made as good as that if it be worth while. Tlie 
control of impurities, including cadmium, is easier than 
it is in smelting. 

Tlh® IL^S^e ©re SSfttmsiftloia 

The total sliipnieuts nf Lake Su].ierior iron ore l>y 
water this season, including a few cargoes that did not 
get away until after Dec. 1, were 46,318,804 tons. This 
is an increase of 14,396,907 tons over the season of 1914 
and is only 2,751,674 tons below the movement of 1913, 
Avhich was the largest on record. The total does not 
include the all-rail shipments for the year, which are 
yet to be reported and which will probably bring the total 
shipments up to a little over 47,000,000 tons. In one 
respect the movement on the Lakes this year has been 
an unusual one. The season opened very slowly, and for 
tie first three months the business was light. It was not 
until August that shippers began to realize the growing 
demand for ore and the necessity of s])eeding up ship- 
ments, so that by far the larger part of the traffic came 
in the second half of the season. From Sept. 1 until the 
close the ore fleet was worked to its ca]wicity, and the 
result shows what can be done when a heavy movement 
is called for. 

The shipments have not yet been divided by ranges, 
but the port figures indicate that the ilesabi range has 
this year furnished about 70% of the total ore, probably 
the liighe.st proportion it has ever reached. In the ship- 
ments from the ^lesabi there has been a great change, 
resulting from the closing of the Hill leases. In 1914 
al)out 35% of the total .shipments were from the port 
of Superior and less than 20% from Dulutii; this year 
less tlian 19% were from Su])erior and 31% from Duluth. 
Last year the Steel Corporation was rushing production 
from its Hill mines to make \\p the iiiiiiimum on its 
leases, but this year the bulk of its shipments were from 
the rilder Mesabi mines, which have been worked ijut 
liglitly for severalyears. The old ranges have kept up 
shipments by working off accunuiiated ore iiiies. The 
stocks left over on Lake Erie docks at the close of the 
ship])ing season are only about the same as la.st year 
and from jiresent indications will be pretty well al)sori)e(l 
by winter shipments io furnaces, leaving the docks nearly 
bare when spring opens. 

The present indications are tliat mills and furnaces an; 
well enough supplied with orders for domestic and export 
business to carry them at high ]iressure through the lirst 
half of 1916 and probably well into the second half. Good 
business seems to be insured for the greater ])art, if not 
all. of next vear. It is estimated lliat the furnaces will 



need from 55,00,000 to 60,000,000 tons of Lake ore. The 
mines are able to supply all that is needed, and the only 
question is whether so large a quantity can be transported. 
Shipbuilding on the Lakes has not been es])ecially active 
for two years past, and there have been few additions 
to the fleet. To carry the additional tonnage, vessels will 
nave to be worked to their highest capacity, as well as 
unloaders on the Lake Erie docks. 

Rather a peculiar situation has developed in the carry- 
• ing trade recently. The Steel Corporation and a few 
other large shippers have anticipated the situation by 
chartering in advance about all the available tonnage at 
a price 10c. per ton above the present .sea.son rates. The 
terms were tempting, and most of the independent vessel 
owners have been glad to take them. This means that 
in<le]XMi(lent shipjiers will find it hard to secure trans- 
[(ortation and will have to accept whatever room the 
larger shippers may be disposed or be able to give them. 
It will not be possible for new boats to be brought into 
use until nearly the close of the season, even if contracted 
for at once. The independent shippers and ore sellers, 
who control no boats, will thus be jilaced at a serious 
disadvantage. Such shippers mine and sell aiiju-oximately 
a quarter of the Lake ore. 

With the activity of this season and a year of still 
greater prosperity in prospect, it was inevitable that 
ore prices, put dow-n to a low point two years ago, should 
be raised. While there is no formal agreement on prices, 
those adopted by a few of the larger interests are always 
generally accepted by the trade. The advance for 1916 
over this year is 75c. per ton, and will be effective early, 
as it is believed that few furnaces, if any, have stockpiles 
large enough to carry them beyond the end of the shipping 
year. This increase, with the advances in coke, will 
increase the cost of raw material to the merchant furnaces 
$1.75, or more nearly, $2 per ton of pig iron. This 
increase, however, is fully lovered by the advances which 
have taken place in pig iron. 

The sale of (SO.OOO long tons of copper consummated 
c^n Dec. 23 was the largest single transaction whereof there 
is any rci-ord. Several times during the last 10 years. 
at crises in the market, as in 1907, there have been 
takings of blocks of 20, 40, even 50 million pounds by 
some of the great London metal houses, but those now 
sound insigniticant in comparison with the recent sale. 
The latter will he a great backlog for the market. Entered 
on the sales books of two great agencies, which previously 
liad made contracts to deliver a large i>roportion of their 
expecti'd su])plies in 1916, the quantity available to other 
((insumers 'A' copper is materially _ diniinished. It was 
hut natural that the market that had already advanced 
should advance further after the news of the big trans- 
action was ])uhlished. As 1915 draws to a close copjjer 
is not only at the highest point for the year, but also 
is higher than at any time since 1907. 

The ocean-freight situation may yet force mining and 
metallurgical companies into the shipping business on 
a more extensive scale than any of them has ventured 
heri'tofore. The American Smelting and Refining Co. 
has already been chartering shi])s to carry co])per to 
Euiope. A few days ago the Union Sul])hur Co. let 
a contract for building a shi|i to carry its suljihur from 
Louisiana. 



Januan' 1, 1916 



THE EN(;iNEEKIX(; & MINING JOURNAL 



hY THE WAY 



Cliarles il. Hall, inventor of the process for recovering 
aluniinum which bears his name, who died Dec. 27, 1914, 
left an estate valued at $10,000,860, according to testi- 
mony of Arthur V. Davis, of Pittsburgh, an executor, 
before State Transfer Tax Appraiser Rice. The entire 
fortune was made in aluminum. 

Instead of the familiar blue cover of the Journal of the 
Society of Chemical Industry, we are in receipt of a 
number (Aug. 31, 191.5) in olive green with this inscrip- 
tion taking up the lower half of the page : 

SPECIAL REPRINT 
In replacement of copie.s lost by the sinking of the R.M.S. 
Hesperian, on September 6th, by a German submarine. 

lu the early days of the "Safety-First" movement a 
big Western contracting firm was desirous of analyzing 
the conditions surrounding all accidents occurring on 
their work with a view to taking steps toward the cor- 
rection of any methods and equipment that might be 
found "unsafe," says Engineering and Contracting. One 
day a 10-ton boulder on a ledge undermined by a steam 
shovel came down among a crew, and after the dust had 
settled it was found that one perfectly good bohunk, 
less nimble than his fellows, had been neatly obliterated. 
In accordance with the general rule the young engineer 
in charge of the work sent in to headquarters his report 
of the accident, concluding with the following weird, but 
doubtless well-intentioned, comment: "Fortunately the 
vi<tim, who had been for several weeks carrying six 
months' wages on his person, only yesterday deposited 
tlie money in a savings bank; so all that he lost was his 
life." 

The manager of the customers' room in one of the 
principal commission houses, according to the Wall Street 
Journal, says: "About the middle of July a man came 
into our office who had never been in before. Next morn- 
ing he appeared again, made some inquiries about pur- 
chases, terms, margins, etc. He drew a check to our order 
lor $5,000 and told me to purchase 200 Allis-Chalmers 
coinmon. The stock was selling between 16 and 18. At 
2 1 he told me to buy 200 shares more and gave me another 
iheck for $5,000. I advised him that additional margin 
was not necessary, except to diminish interest charges, 
but he insisted. He kept increasing his holdings and 
recently sold out the entire lot in blocks of 200 shares, 
ills profits amounted to upward of $27,000. I asked him 
1k)w he came to select that particular stock. His answer 
was that he figured out that the Chalmers car was the 
coining car, and he saw a period of great prosperity for 
its manufacturers." We don't get the entire hang of 
why the man gave $5,000 checks on his first two purchases, 
but we suppose it's all right. Anyway, a fool for luck ! 



Jecei 



^!i"^adleffii<si§ 



December dividends were paid by Gv' mining companies 
and reach a total of $16,980,812, as compared with dis- 
bursements of $7,;38.S.297 by 38 companies in December, 



1914, and $9,230,918 by 41 companies in 1913. To 
equal and pass the combined dividends of 1913 and 
1914 is astonishing. Metallurgical and holding com- 
panies paid $6,700,000, as compared with $8,518/;24 in 
1914, showing still the influence of suspended paj-ments 
ijy the Steel Corporation, while Canadian and Mexican 
companies paid $1,268,536 in 1915 and $690,634 in De- 
cember, 1914. A full review of the year's dividends will 
appear in the annual statistical number, issued on Jan. 
8. The accompanying tables give the details of the amaz- 
ing payments for the month : 



United States Mbing ( 

Argonaut, g 

Bingham-New Haven, c 

Bunker Hill Con., g 

Bunker Hill & Sullivan, l.s. . 

Butte & Superior, z 

Caledonia, l.s. 

Calumet & .Arizona 

Calumet & Hecla, e 

Champion, c 

Chii 



Continental, z 

Copper Range, c . 

Daly-Judge, s.l 

Eagle & Blue Bell, g.s.l... 
Federal M. & S. Co., pfd 

Golccnda, g 

Golden Cycle, g . . . . 
Grand Central, g. , , 

Grand Gulch, c 

Hecla, l.s 

Hercules, l.s 

Homestake, g 

Homestake, g. 

Hope Mines Dev., g. . 
Interstate-Callahan, z. . . . 

Iowa Gold, g 

Iron Blossom, g.s 

Iron Blossom, g.s 

Iron Cap, pfd., c 

Jumbo Extension, g.s. . 

Lake View, z 

Linden, z 

Lower Mammoth, l.s 

Magma, c 

Mammoth, g.s.c 

Mt. Aetna, g . 

National Zinc and Lead, 2 

■ Nevada Con., c 

New Idr 



North Star, g 

Old Dominion M. and S., 

Plymouth, g 

Prince Con., l.s 

Quincy, c 

Ray Con., c 

St. Joseph, 1. 

Seven Troughs, g.s 

Silver King Con., s.g. . . . 

Socorro, g 

Stewart, s.l 

Success, l.s 

Superior & Pittsburgh, c. 

Ignited Globe, c 

United Verde, c -. 

Utah, c 

Utah Con., c 

\'indirator, g 

Wasp No. 2, g. . 
West End. e. . , . 
Wolverine & Ariz.. .■ . 
Yak. s.l.. 
Yellow Aster, g . . 
Yellow Pine, l.g.s. 
Yukon, g 



Industrial and Holding Companies 

Amrr. Sm. and Ref., com 

Amer. Sm. and Ref., pfd 

Crucible Steel, pfd 

General Development 

Great Northern Ore 

Inland Steel 

Internation.ll Nickel, com 

LaBelle. pfd 

National Tx'ad, com 

National Lead, pf<l . . 
Old Dominion of Main,. • 
Pittsburgh Steel, pfd ... 
Pittsburgh Stei-1, pfd". . 

Venture 

* Back dividends. 



Situation 

CalU. 

Utah 

Calif. 

Ida. 

Mont. 

Ida. 

Ariz. 

Mich. 

Mich. 

N. M. 

Mo. 

Mich. 

Utah 

Utah 

Ida. 

Ariz. 

Colo. 

I'tah 

Utah 

Ida. 

Ida. 

S. D. 

S. D. 

Calif. 

Ida. 

Colo. 

Utah 

Utah 

Ariz. 

Ncv. 

Utah 

Wis. 

Utah 

Ariz. 

Utah 

Utah 

Mo. 

Nev. 

Calif. 

Calif. 

Ariz. 

Calif. 

Utah 

Mich. 

Ariz. 

Mo. 

Nev. 

Utah 

N. M. 

Ida. 

Ida. 

Ariz. 

Ariz. 

Ariz. 

Utah 

.\riz. 

Colo. 

S. D. 

Nev. 

Ariz. 
. Colo. 
. Calif. 

Nev. 

Alas. 



Per Share 
SO. 10 



2 00 
1 00 

10 00 

3 00 



Canadi: 



Don 



Me 



can and Central An 
Companies 



Hedlry, K 

Hollinger, g 

Kerr Lakes 

LeRoi No. 2, g 

Lucky Tiger, g...... 

Nova Scotia, S. & G. 
Rambler-Cariboo, c . . 
Seneca-Superior, s. . . 

Standard, s.l 

Temiskaming, s. . 



Situation Per Share 

/U.S. \ SI OO 

t.Mex. / 1.75 

U.S. 175 

U.S. 3.00 

U. S. .50 

Ind. 2.00 
U. S.-Can. 5 00 

U.S. 1.00 

U.S. 75 

U. S, 1 . 75 

Ariz. 2.00 

Peun. 1.75 



Situation Per Share 

Ont. JO 50 

B.C. 100 

Ont. 40 

Ont. 25 

B. C. 24 

Mex. Oil 

N. S. 12 00 

B.C. .01 



Ont. 
B. C 
Ont. 



Total 

S20,000 

45.73S 

5.000 

163,000 

2,244.915 

52.100 

771,2M 

1,500,000 

200,000 

869,980 

220,000 

1.084.498 

105,000 

44,657 

119,861 

85.000 

30,000 

12,500 

2,400 

100,000 

200,000 

163,254 

251,160 

5,000 

690.000 

8,667 

30,000 

50,000 

44,136 

97,168 

12,500 

3,060 

10,000 

120,000 

20,000 

5,000 

15.000 

999.728 

100.000 

100.000 

324.000 

58,520 

50,000 

330,000 

730,401 

352,350 

36,075 

63,758 

18,865 

61,918 

45,000 

569,922 

276,000 

225.000 

2,436.735 

150.000 

45.000 

5,000 

93,429 

23,734 

70,000 

2,000 

150,000 

262,500 

Total 

$500,000 
875.000 
427.638 
89,964 
750,000 
157,672 

2,091.632 
99,154 
154,911'. 
426,433 
7S6,70S 
U2,5tH1 
225.0tX) 
4.0(H) 



Total 
$250,000 
120,0tHi 
240.000 
l.iO.OOO 
29.160 
6I,3S0 
126,720 
17,500 
95.776 



28 



THE ENGINEERING & MINING JOURNAL 



Vol. 101, No. ] 




E. H. Emerson, manager of the Cuba Copper Co.. Santiago 
de Cuba, is spending the holidays in New York. 

A. G. Wolf, who has recently been in the San Juan district 
on professional business, returned to Denver for the holidays. 

George B. Holderer, manager of the Furlough Development 
Co. at Wickenburg. Ariz., is in New York during the Christ- 
mas holidays. 

Wm. Mathews, who formerly operated in Jalisco, Mexico, 
has returned to San Antonio, Texas, from an extensive trip in 
Central America. 

George Watkin Evans, consulting mining engineer, has 
moved from the New York Block to 901 American Bank Build- 
ing, Seattle, Wash. 

A. A. Hassan, of Washington. D. C. is prospecting on a 
large scale, with diamond drills, the gold deposits of Mont- 
gomery County, Maryland. 

B. B. Thayer expects to sail for Chile on Jan. 15. He in- 
tends to spend about a month in Cliile and will be absent from 
New York about three months. 

William H. Carpenter, superintendent of the Bristol Brass 
Co., Bristol, Conn., has resigned after 33 years' service. He 
has been succeeded by John F. Wade. 

B. J. Padshah, of the firm of Tata Sons & Co.. London, 
managing director of the Tata Iron and Steel Co., Sakchi, 
India, arrived in New York last week. 

W. E. Tracy has resigned as superintendent of the Liberty 
Bell company, and has been succeeded by Henry G. McCIain. 
Mr. Tracy will be engaged in metallurgical work in the East. 

E. H. Hamilton, formerly manager of the Virginia Smelting 
Co. has become consulting metallurgist to the Consolidated 
Mining and Smelting Co., of Canada. Ltd., and has gone to 
Trail, British Columbia. 

Joseph G. Butler, Jr., of Youngstown. Ohio, probably the 
best known and most popular man in the iron trade of the 
country, has been receiving congratulations this week on his 
75th birthday anniversary. 

J. W. Sheperdson has resigned as assistant general super- 
intendent of the Central Iron and Steel Co., Harrisburg, Penn., 
to go in the early part of January with the Morgan Construc- 
tion Co. at Worcester, Mass. 

Ross Blake, division superintendent of the St. Joseph Lead 
Co. at Leadwood, Mo., has resigned liis position to taice effect 
Jan. 1. and has accepted a position with the Baker Lead Co. 
at the same place. S. S. Clark, formerly mining engineer at 
Leadwood, but recently division superintendent at River- 
mines, has been transferred back to Leadwood. and H. A. 
Kruger, the Leadwood engineer, goes to Rivei'mines to take 
Mr. Clark's place. B. F. Murphy, who went to Leadwood a few 
weeks ago to take a contract to mine Hoffman shaft, has been 
made assistant superintendent under Mr. Clark. 

George Otis Smith, director of the United States Geological 
Survey, in his annual report just submitted, refers as follows 
to the changes in the Division of Mineral Resources due to the 
resignation of Edward W. Parker; "Hiram D. McCaskey was 
appointed geologist in charge; E. F. Burchard, geologist In 
charge of the section of nonmetallic resources, and C. E. 
Lesher, associate geologist to take charge of the statistics of 
coal. The number of men designated to take up the work 
relinquished by Mr. Parker is perhaps the strongest indica- 
tion of the amount and importance of that work which he so 
long successfully carried on." 



OBHTUARY 



Stephen R. Whiting died at Cambridge, Mass., Dec. 23, aged 
SI years. He was for many years connected with the Calumet 
& Hecia Mining Co. and for 13 years was general manager 
of the comimny, retiring In 1901. He was well known In the 
Lake Superior country. 

Milton Whiteside Crary, one of the oldest pioneers of 
Placer County, California, died at Auburn on Dec. 8. He wa.s 
a native of Ohio and was 90 years old. He went to California 
In 1852 and mined in the Forest Hill district on Middle Fork 
of American River. Ho helped to clear the strip of land 
which l.s now the main thoroughfare of the Town of Auburn. 

John J, Tobin, deputy labor commissioner of California, 
died suddenly of ptomaine poisoning at Los Angeles on Dec, 



11. Mr. Tobin was a resident of Alameda, though his official 
headquarters was at Los Angeles. He was a native of Ireland 
and 7S years old. He came to the United States at an early 
age and went to California many years ago.. He was a news- 
paper man of large experience and was also a member of the 
state legislature. He was deputy collector of the port of San 
Francisco under John H. Wise about 15 years ago. 

John H. Longmaid, Sr., one of the best-known mining 
operators in Montana, died at his home in Helena. Dec. 19, 
aged S4 years. Mr. Longmaid first came to Montana as a rep- 
resentative of the English company which owned the Drum 
Lummon mine at Marysville. Later he bought and operated 
mines in the Marysville distric, and also opei'ated in other 
parts of the state. He was born in England, and previous to 
coming to Montana had operated mines in all parts of the 
world and had achieved an international reputation both as a 
mining engineer and as a manager of mining properties. 

George E. Somers, vice-president of the Bridgeport Brass 
Co. and president of the Bridgeport Crucible Co., Bridgeport, 
Conn., died Dec. IS, aged S2 years. He was born in Newtown, 
Conn., and began his business career in Waterbury. Thirty- 
five years ago he removed to Bridgeport and purchased an 
interest in the Bridgeport Brass Co.. becoming its general 
manager, a position he held for many years. He was active 
in organizing the Bridgeport Crucible Co. and was its presi- 
dent up to the time of his death. He was prominent in the 
political affairs as well as in the business circles of his home 
city. 

John Palmer died at Sacramento, Calif., Dec, 4. He was 
born at Whitneyville, Maine, in 1S26. He went to California 
and made his home in Amador County in the spring of 1859. 
He was one of the jjioneers and active in quartz mining, and 
for 18 years was superintendent of the Bunker Hill in Amad'or 
County. For five years he was employed in Alaska at the 
Treadwell mine. Two sons survive him. The eider, Wales 
Palmer, is superintendent of the Fremont mine in Amador 
County, and William Palmer is engaged in dredge mining in 
the Oroville field. Although nearly 90 years old, John Palmer 
persisted in visiting the Panama-Pacific Exposition during the 
closing week, and it is believed tliat the strain of the extra- 
ordinary walking and exposure brought on pneumonia, from 
which he died. 

Captain James H. Cundy, a prominent mining man of the 
Lake Superior district for a number of years, died in Chicago, 
Dec. 12. Born in Cornwall, Eng., in 1847, he came to America 
in 1860. First mining work done in New Jersey. Went to 
Michigan and worked at old Cliff copper mine, later in Onton- 
agon county. Went to Champion mine, at Champion, as shift 
boss in the seventies, and later was mining captain at the 
Michigamme mine, at Michigamme. Returned to Champion 
mine as mining captain, under AValter Fitch, general manager, 
now of ICureka. I'tali. Accepted position as manager of mines 
for Illinois Steel Co., with headquarters at Quinnesec, on the 
Menominee range and opened the Quinnesec mine there. 
When that property was taken over by the Steel Corporation, 
he continued as manager. Retired from active life six years 
ago. Was well known and highl.v I'espected in the Lal^e Su- 
perior district. He was a member of the Lake Superior Min- 
ing Institute. 

Henry Wick, prominent throughout Ohio as a steel manufac- 
turer and coal operator, died at Youngstown, Ohio, Dec. 18, of 
pneumonia. He was 69 years old and rated one of the wealth- 
iest men of that city. Henry Wick founded and took the most 
active interest in the upbuilding of the Ohio Steel Co. of 
Youngstown, now a part of the Carnegie works of the United 
States Steel Corporation, and it was he who organized the 
great combination known as the National Steel Co. He, was 
one of the most expert steel men of the country. He was 
born In Youngstown in 1846 and educated there and at Hudson. 
Ohio. His first business occupation was running a coal mine 
at Youngstown. Subsequently he was with the Packard Coal 
Co. and later was a member of the firm of Wick & Wells, coal 
operators. Then he became secretary and treasurer of the 
Youngstown Rolling Mill Co. and remained with that institu- 
tion for 15 years. He overhauled the Warren mills and con- 
solidated the GIrard mills with them. Later, he was one of 
the founders and ,a leading spirit in the organization of the 
Ohio Steel Co. at Youngstown, and his efforts more than those 
of any one else raised it from an unimportant beginning to the 
second largest plant in the United States and built up a trade 
with every country In the world. This plant was later mad. 
a part of the Carnegie Steel Co. and subsequently was taken 
over by the United States Steel Corporation. Mr. Wlclt wa.s 
a director of the National Bank and the Dollar Savings and 
Trust Co. of Youngstown and was one of the largest realty 
owners In the city. He also had valuable holdings In lead, 
gold and sliver mln's in Idaho, Montana and British Columbia, 
He leaves a widow and three children. 



Jaiuiar)' 1, 1916 THE ENGINEERING &' MINING JOURNAL 

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29 



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SABT FRANCISCO — Dec. 22 

Under the Blue Sky Laiv all companies permitted to sell 
their shares or other securities are required to render semi- 
annual reports to the commissioner of corporations, to be filed 
within the first 15 days of January. These reports are for the 
information of the commissioner and not for public inspection. 
The.v include an accounting of the securities that were sold 
under the permit; the money received: commissions paid and 
to whom paid: and the uses to which the proceeds have been 
put. A showing of the extent of the Investment of each 
officer and director and the amount of time each gives to the 
affairs of the company is also demanded, as well as a complete 
financial statement. That is all for the present. 

The Northend Comsfoek Mlnine Companies, with the ex- 
ception of Con. Virginia, have held their annual elections, the 
result of which indicates a spirit of cooperation on the part of 
the several companies. The boards of flirectors are largely 
identical. H. L. Slosson, Jr., president of the Mexican, Ophir 
and Union Con., is a director also of Con. Virginia and will 
most likely remain in that position after the annual election 
of that company in March. W. \V. Turney, president of Con. 
Virginia, is vice-president of Ophir and a director and vice- 
president of Union and Sierra Nevada. W. J. Morrow, presi- 
dent of Sierra Nevada, is a director of Mexican and Ophir. 
Herman Zadig, vice-president of Mexican, is a director of 
Con. Virginia and Ophir. The November mill sheet of the 
Mexican mill, which is running on ore from the Union and 
Sierra Nevada, shows that the Union will receive from ore 
crushed in November $12,675, after paying all milling costs. 
Sierra Nevada, which began milling in quantity near the end 
of the month, will receive $2,146. The bullion was shipped to 
Selby. The Union cleanup settles all indebtedness and the 
December returns will make a surplus, the first 10 days' mill- 
run in December being sufficient for all the expenses of the 
company for the month. It is expected that the Union will 
begin the New Year in a better position financially than at 
any time since 1S79: and the mine has good ore on two levels; 
so that the prospect for 1916 is favorable. The past two or 
three months have been prosperous in all the Northend mines. 
Orebodics of high grade have been developed and exploration 
and development work has been advanced: the unwatering of 
the lowest levels progressed favorably. And what will add 
most to the future of the Comstock is that the officers and 
managers are working together harmoniously for the com- 
bined success of the entire group of Northend mines. 

DENVER — Dec. 24 

Don-ntonn I'umpins Co.'s operations at Leadville are again 
active, repairs having been made to the pump motors. The 
water level is now considerablj- below the 700-ft. mark in 
the Penrose shaft. 

The Vindicator ConHOlidated is earning approximately 
$10U,OUU pel- munth, according to Adolph J. Zang, president, 
and $S40.000 of the notes issued to purchase the Golden Cycle 
mine have been redeemed, leaving an unpaid balance in notes 
of $410,000. The December dividend of 37q has been dis- 
tributed. The Portland Gold Mining Co. has also paid a 
Christmas dividend of 27c, amounting to $40,000. 

Schedule for Treatment and Freight on Cripple Creek dis- 
trict ores has been announced by Golden Cycle Mill at Colo- 
r.'ido City; Under and including $10 per ton. charge is $4: over 
$10 and including $15 per ton. charge is $5.2!); over $15 and 
including $20, charge is $6; over $20 and including $25, charge 
is $6.50; over $25 and including $30, charge is $7; over $30 and 
including $40, charge is $7.50; over $40 and including $60, 
charge is $8.50; over $60 and including $100. charge is $8.75; 
over $100 and including $150, charge is $9.75: over $150 and 
including $200. charge is $10.75; over $200 and including $300, 
charge is $12.75: on all grades above $300, the charge is $12.75 
plus 1% of the value in excess of $300. It is expected that 
the Portland mill will make a similar announcement. Both 
milling companies are busy engaging ore supplies and sign- 
ing up contracts, and the belief is expressed in some circles 
that the lowering of rates and the efforts to secure contracts 
are due to anxiety concerning the success of the numerous 
flotation investigations being conducted by large mining 
comp.inles. 



Bl TTE — Dec. 2:5 
.\t a MeetlDK of the Butte Doluth principal stockholders, 
bond holders and creditors and Oscar Rohn, general manager 
of the East I3utte Mining Co.. an agreement was reached by 
which the plant of the former will be opened and operated by 
Mr. Rohn and those associated with him in the control of the 
East Butte. ITnder the terms of the agreement, Mr. Rohn 
and the East Butte interests will take charge of the Butte 
Duluth properties and advance the funds necessary to com- 
plete the electrolytic plant and bring it up to a capacity of 
between 750 and 1.000 tons of ore per day. A flume will be 
constructed between the Butte Duluth plant and the East 
Butte oil flotation plant. The two properties adjoin and the 
East Butte company can operate them jointly to great advan- 
tage. Under the agreement Mr. Rohn and his associates are 
to receive back the $100,000 that it is estimated it will cost 
to put the Butte Duluth plant in a position where it can be 
operated to advantage. After that is paid back to those 
advancing it, the floating indebetedness. labor claims ana 
back interest amounting to approximately $250,000 will be 
paid. Then the bonded indebtedness is to be cleared off. This 
amounts to $500,000. The stockholders of the Butte Duluth 
plant agree that if this is done, they will turn over to Mr. 
Rohn and the East Butte interests 55<;^ of the stock of the 
Butte Duluth company. For some weeks Mr. Rohn has been 
conducting experiments with the Butte Duluth ores and he is 
convinced that with the changes and improvements he has 
planned to make in the electrolytic plant of the Butte Duluth, 
and with the advantages that can be taken of the new oil 
flotation process that has just been installed at the Pittsmont 
smeltery of the East Butte company, it is possible to operate 
the Butte Duluth at a splendid profit on the present copper 
price. He is confident that within the two years time allowed 
under the agreement that the entire indebtedness of the Butte 
Duluth can be paid off from the profits of operations in addi- 
tion to paying all the costs of mining and operating and 
making needed improvements. This will leave the East Butte 
interests with a majority of the stock of the Butte Duluth 
company and control of the property. The plan as outlined 
was subject to the approval of the District Court as the Butte 
Duluth is in the hands of a receiver. 

SALT L..VKE CITY — Dec. 23 

The TIntic Tunnel Co. was incorporated Dec. 18 for the 
purpose of draining the eastern and southern sections of the 
Tintio district. It is proposed to drive a 5-mi. tunne,! from 
the head oi Goshen Valle>-. starting at an elevation of about 
5.000 ft. The capitalization is $2,000,000. and the directors are: 
F. C. Richmond, D. R. Beebe. S. B. Smith. B. D. Lyon. H. J. 
Fitzgerald. R. J. Evans. O. F. Davis. C. E. Martin and L. A. 
Martin. The promoters think that the water that will be 
developed will pay for the cost of driving the tunnel. 

The New Flotation Section at the Silver King Coalition 
mill in Park City went into operation Dec. 5. -\n increased 
saving of from 10 to 15% of the silver and 10<"r of the lead, 
as compared with the former milling, is reported. The 
changes and additions that have been made to the mill this 
year have doubled its capacity, bringing it up to 600 tons per 
day. At present 400 tons are being handled. About 70% of 
the mill ore is sulphide and 30% carbonate. The flotation sec- 
tion takes the place of vanners formerly used. The equip- 
ment installed includes 15 standard Callow notation cells, 
three Pachuca tanks, Portland continuous vacuum niter, ami 
two 300-ton Marcy mills. A saving of 90 to 93% ot the silver 
and 90 to 95%. of the lead is being made. 

The I'tnh Minerals ConcentrntinB Co.. which has a 100-ton 
mill at Eureka in the Tintic district, has recently Deen treat- 
ing tungsten ores. Ore from White Pine County. Nevada, in 
which the tungsten was in the form of scheelite in a gangue 
of quartz and limestone has been successfully treated. The 
ore carried around 4% WOj and concentrates running 50% 
tungsten were made. An 82% extraction was recorded. The 
treatment consists of wet concentration, crushing to ^-in. 
by gyratory crushers, and then to six-mesh by rolls. The 
material passes to impact screens of 10-mesh size, after which 
the oversize is again crushed by roll, and reducea to 10-mesh. 
The entire product is treated on tables, no classlfloation being 
used. Company is advertising for custom tungsten ores. 



30 

jiiiiuiiiiaaiiiiiiiiiirainiin 



THE EXGIXEERIXCt fe-" ^^FIXIXG JOFRXAL 



Vol. 101, No. 1 



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Tlie Miimiinij^ 



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ALASKA 

ALASKA JUXEAU (Juneau) — Piactically all contracts let 
for mill and power plant: grading for latter completed; mill 
grading oO'^c completed. Plant expected to be in operation at 
capacity — 8,000 tons per day — early in 1917. 

PRIMROSE JIIXE (Seward) — C. G. Hubbard, who recently 
secured an option upon Primrose Mine 16 mi. north of Seward, 
has uncovered new vein of high-grade gold ore. assays of 
which have averaged nearly $200 per ton. Will commence 
shipping to Tacoma smeltery at once and expects to average 
about 30 tons per month throughout winter. 

ARIZOXA 
Cocbise County 

JIM WILLIAMS (San Simon) — Property situated in the 
Chiricahua Mountains has been leased with bond by J. T. 
Anderson, of Los Angeles, from J. C. Hancock and C. E. Welsh. 
Group consists of six claims, with 25-ton mill, tables of which 
will be replaced with Stebbins tables. 

OLD FRIEND (Tombstone) — This group copper claims, 12 
mi. northeast of Tombstone, bonded to Oscar Evans by James 
Hamilton and associates of Bisbee for $30,000. Mr Evans will 
install concentrator and hoist and will develop on large 
scale. Surve.v for railroad to be built to camp from Cochise 
Stronghold, 15 mi., being made. 

Gila County 

OX BOW (Payson) — Company is rebuilding wagon road 
preparatory to resuming operations. 

Greenlee County 

MORENCI WATER (Morenci) — Company has appealed to 
state corporation commission for protection. Appeal states 
members of AVestern Federation of Miners interfering with 
service, polluting water in reservoir and threatening destruc- 
tion of plant. 

Mohave County 

E. P. RIPLEY, president of the Santa Ff, was in Oatman 
recently. It is thought he was here to ascertain the ad- 
visability of running a sliort line to the district. 

UXITED XORTHERX (Kingman) — Has begun develop- 
ment of group of three claims lying northwest of Fessenden. 

GOLCOXDA EXTENSION (Golconda)— Section of shaft 
between 2S0 and 400 levels finished. Laterals will be driven 
from latter level. 

BOUXDART CONE (Kingman)— Last 90 ft. of 450-ft. drift 
on 500 level has exposed 4^ -ft. ore, $15 to $25 per ton. Total 
width of ore is 12 ft. 

COrPERFIELD (Mineral Park) — Copperfield Porphyry 
Copper f'o. has shipped its initial car to Consolidated Arizona 
smeltery at Humboldt. 

UNITED E.ASTERN (Oatman)— All lateral work stopped: 
sinking in old vertical shaft from 565 to 765 level and in new 
main shaft to depth of 600 ft. is being rushed. 

YUCCA TUNG.STEN (Yucca) — Forty workmen will soon 
have completed good wagon road to property. Development 
is going on and things are being shaped for installation of 
mill. 

L.\ZY BOY (Kingman) — A 300-cu.ft. air compressor and 
three jackhamers have been installed. Within few davs, 
40-hp. gasoline hoist will arrive, foundation for which already 
laid. 

ARIZONA TELLURIUM (Kingman) — Simulaneouslv with 
payment of second instalment. $10,000, to I{. A. George"of Los 
Angeles, on that portion of property bonded from him. crosscut 
on ino level cut Ohio vein, which averages about $6 in gold 
and silver. 

TELLURTDE CHIEF MINING (Kingman)— Company has 
taken over and will soon devlop Garnier group of three claims 
in Maynard district, 16 mi. east of Kingman. Road to prop- 
erty will be improved and hoist will be installed. Tellurium 
li.iK been found in small quantities. 

:;rT/Rnr>CK M. & M. (Kingman)— Has taken over from S. R. 
Pi'il' r and F. A. Murdock group of claims adjoining Putney 
gr'.i.ii on we.st and possessing extension of Nellie vein. Work- 
m'- ir.- building road to property and grading site for 25-hp. 
gii- .:.:.• lioist and four-drill compressor. 

0..;.i-ONDA CON.'SOLIDATED MINES (Golconda) — Com- 
pan.% : ■ f I ntly organized under laws of Arizona, Issuing 1.500.- 
000 shuif!. of par value of $1 each. Will d.\«lop holdings 
consisting of nine claims in Cerbat range and Golden Gem 
mine of six patented claims, I't ml. from famous Golconda. 

Pima Count>- 

TWIN liUTTKS (Twin Puttes)— M. D. Oavlord and asso- 
clates, of Kl Paso, have taken over this property under bond. 
ConslHts of -.2 claims, of norphyry-copper ground situated in 
Slerj-lta Mts., about 4 nil. from TncHon-Nogales branch of S. P. 
Ry. Property In developeii by shafts, tunnels, opencuta. etc., 
some shafts to a depth (rf l.-,0 ft , alsD drill boles, some of 
which are 700 ft. deep. Ii.vi-lopin.tit seems to show there are 
SOO acres of 2'/, copper ore that cm be worked with steam 
shovels. There are also veins of hiKh-graile shipping ore. 
.New company will deepen sh.ifts anil ■Irlll. 

I'nvniinl County* 

MOLYBDENITE has Just been discovered bv John Bradv 
ind J. E. FltzRerald on Granite Creek 3 mi. south of Prescotl. 



BIG LEDGE DEVOLPMENT (Cherry Creek) — Company 
nas let contract for 500-ft. shaft on Boyer group on Cherry 
Creek. 

MONICA (Kirkland) — W. W. Copp, of Los Angeles, is now 
in charge and is doing development work. Stamp mill will 
soon be going. 

ANTIMONY (Mayer) — Outcrop 2 ft. wide and traceable 1 
mi. was discovered on Battle Flat by M. H. Ryan and Edward 
Rogers, of Mayer. 

WICHITA PLACER (Lynx Creek) — Operations will begin 
this month. New sluice boxes and pumps have been in- 
stalled and four hydraulic rams recently received. 

CONSOLIDATED ARIZONA SMELTING (Humboldt) — Has 
blown in second reverberatory furnace; capacity increased to 
500 tons per day. Custom ores accumulating in district will 
now be marketed. 

COPPER QUEEN GOLD (Mayer) — Building new wagon 
road to this property on Agua Fria. and it is thougiit opera- 
tions will soon bf resumed. Development work was sus- 
pended few months ago. 

UNITED VERDE EXTENSION (Jerome) — Shipping 40 tons 
per day to Clarkdale smeltery; about one-fourth of this aver- 
ages 45% copper. Has just placed new hoist in operation. 
Is building aerial tramway to railroad, distance of one mile; 
will be finished in few weeks. 

Yuma County 

LA P.\Z GOLD (Parker) — O. L. Grimsley, president is pre- 
paring to install $75,000 worth of hydraulic machinery. 
Several sections on east side of Colorado river, in rich placer 
district, yielded heavily in the '70s, located by company 3 
years ago. -About time work was started, Indian agent 
ordered company off, declaring ground was part of Colorado 
River Reservation. Land offices at Phoenix and at Washing- 
ton upheld agent, but Grimsley appealed to Secretary of 
Interior, who recently ruled in company's favor. 

C.\LIFORM.*. 
.\niador County 

ALPINE (Plymouth) — All of old buildings and machinery 
have been dismantled and moved and carload of steel re- 
ceived to be used in construction of new headframe. Ground 
cleared for carpenter and machine shops. Superintendent 
Clark expects to be ready to begin sinking 750-ft. shaft by 
Jan. 1. 

ZEIL.A (Jackson) — Recent report that preparations were 
being made for reopening this propert.v was an error. Mr. 
Hutchinson, president of Kennedy Mining and Milling C"o., 
owner of Zeila, states that there is no present intention of 
reopening mine. He is waiting for discovery of process that 
will economically treat low-grade sulphide ore .ind leave net 
profit to operator. He knows ore is there and that it cannot 
get away, but its value is not sufficient to warrant large 
expenditure for equipment and treatment. 

nntte County 

CALIFORNIA GOLD MUXES (Forbestown) — New incor- 
poration organized to take over Gold Bank-Golden Queen- 
Shakespear mines from Forbestown Consolidated, capitaliza- 
tion $50,000, divided into 1,000,000 shares. Incorporators and 
present stockholders are C. R. Reece, Arthur Buckbee, A. Y. 
Eagle, B. Jl. Sullivan, Arthur McFarlane. Head office is in 
Salt Lake City. Progress is being made in resuming de- 
velopment. The 20-stamp mill was started with 5 stamps 
dropping and later increased to 15 stamps. It is expected to 
have full 2ii dropping soon. Increase in capacity of mill is 
contemplated. 

CalaveraH County 

ECONOMIC (Esmeralda) — New compressor, to have been 
installed several months ago, delayed on account of labor 
strike. C. Thormablen, of Zanesville, Ohio, one of the owners, 
paid recent visit to mine. 

UTIC.V (.\ngels Camp) — Mules emplo.ved In hauling ore cars 
underground having completed their vacation which lasted 
several months on account of shortage of water for operat- 
ing, have been sent down hole and work is resumed. Com- 
pany will add about 100 men to regular force now working 
In Gold Cliff, which will make total of more than 300 men in 
employ of Utlia company. 

Kern County 

POWELL'S CAMP le.asers have started extensive work 
most of them meeting with good results mining scheelite. 
Ore Is taken to Atolia. 

STRINGER district is employing about 100 men who are 
working with Jigs .and dry washers and other appliances for 
handling tungsten and gold taken out of placer claims. Men 
are all making more than wages and some of them are 
said to average $25 per day. 

MERCED (Randsburg)- Sunshine mill Is being put in 
shape for reduction of about 20 tons of ore, said to run $1" 
to $20 per Ion gold and about 10% tungsten. Shaft at Sunshin. 
will be deepened for developing orebodles believed to iiersi 
below 5O0 level. 

CONSOLIDATED (Randsburg) — Several tons of low-gr;i.l. 
tungsten ore Is on dump, but active extraction of this or. 
has not been undertaken as work is being centered on main 
shaft and Installation of pumps, tanks, etc., for furnishiiii; 
water to Atolia tungsten camti, 5 mi south nf l{:ii\dsliiirg 



January 1, 11)10 



THE KNGlNEElUJSiG 6- MliNlNU JUUUNAL 



Nevnda County 

NORTH STAR (Grass Valley) — Incline shaft has reached 
2.630-ft. point (vertical depth 2,450 ft.), which is exactly 
elevation of Grass Valley above sea level. 

GREY STONE (Nevada City) — Reported that this mine in 
Washington district h.as disclosed vein of good ore 12 ft. 
wide in tunnel working. George Hegarty is part owner. 

OCEAN STAR (Washington) — Property recently taken over 
by new operators and winze is being sunk from tunnel. Ore- 
body widened out; mill running two shifts on good ore. 

OVERSKJHT (Quincy) — Since rains began there is plenty of 
water for mill work at this mine on Washington Creek. 
Recent crushing showed an average of $15 per ton, with some 
ore of higher grade. G. E. Wilson and Augvist Benner are 
owners. 

San Beruiirdino County 

ATOLIA MINING (Atolia) — About 300 men employed; 
large number of leasers working on adjoining properties. 
Company work is chiefly applied to the development of new 
veins arid pockets on the Papooset, Paradox, Piute, Churchill 
and Spanish Lease. Large number of new tents have been 
erected by company beside many new frame buildings for 
housing of men. Osdick propci ty adjoining company ground 
is said to be one of most i)romising tungsten properties 
in district. John Mahood and Frank Peldman of Kelso Creek 
district report an excellent showing and have erected reduc- 
tion plant. Tungsten excitement extends to Randsburg and 
in fact all over this region. Everybody is talking tungsten. 
Atolia now has about as many inhabitants as Randsburg and 
camp is very lively. Situation is on Randsburg branch of 
Santa Ff, about 30 mi. north of Kramer and 5 mi. south of 
Randsburg. 

Shastii County 

MIDAS (Knob) — Has been taken over by deed upon final 
payment of $35,000 by Victor Power and Mining Co. Purchase 
price said to be $125,000, first payment made on day war was 
declared in Europe. 

Siskiyou County 

MANGANESE deposit on Balfrey & Grisez ranch is being 
prospected, and gold-bearing ore also disclosed. 

McKEARN (Callahan) — Mine closed for winter, having 
given employment to 25 men during season. Installation of 
50 stamps, tube mill and cyanide plant contemplated. 

HINZEY (Callahan) — Development during last two years 
has produced SOO tons of ore from three oreshoots which assay 
from $6 to $23 per ton. Installation of small stamp mill con- 
templated. 

SPENCER (Yreka) — J. E. Kirk, who has been operating 
this property with others in Humbug district for several 
years, has closed down for season and owners of mine will 
undertake its operation next year. Mr. Kirk has made a 
recovery of $5 per ton from dump rock treated in an arrastre. 

SISKIYOU SYNDICATE (Etna) — New stamp mill being in- 
stalled on Cow Creek and ditch for carrying water is being 
constructed. Expect to have mill completed and operating 
early in spring. There are 500 tons of ore on dump ready 
for crushing. 

Tuolumne County 

CORRALL GOLD HYDRAULIC CO. (Columbia)— Company 
will take over property of 100 acres, including Rehm, Baci- 
galupi and Hastings lands. Charles S. Young, of Hermoso 
Beach, near Los Angeles, is manager. Several oil operators of 
Los Angeles and Orange County are in company. 

CALIFORNIA GOLD MINING AND DEVELOPMENT CO. 
(Sonora) — New incorporation organized to take over patented 
and unpatented quartz claims. Price placed at $10,000 and 
company is authorized to issue 34,000 shares to E. Bennett 
and P. A. Ellis in exchange for claims; and option to sell 10,000 
shares to net not less than 80c. per share, proceeds to be used 
in development, etc.; balance of shares to be held in escrow. 

COLORADO 
Boulder County 

BOULDER TUNGSTEN PRODUCTION (Boulder) — Clark 
tunnel advanced 200 ft.; has struck blind vein of tungsten 
ore that will average 10';; of tungstic acid across width of 
3 ft. Rich stringers will run as high as 70%. Discovery 100 
ft. below surface. New mill building completed; installation 
of machiner,\' now under way. 

NEDERLAND TUNGSTEN MINES AND DEVELOPMENT 
CO. (Nederland)- — This companv was recently incorporated 
under laws of Colorado for $1,000,000 bv H. L. Thompson W. 
L. Smith. D. N. Cymyotti and W. W. Klrby, for purpose of 
developing 100-acre tract of mining property recently ac- 
quired in tungsten district. Preliminary development fund 
of $10,000 has been provided and work will commence within 
fiO days. The property is located about 'i mile southeast of 
Nederland on divide between P.oulder and Heaver Creeks. 

YELLOW PINE (Boulder) — Ralph Cotton, owner of this 
property, plans extensive underground i-xploration and sur- 
face improvements during coming year. It is estimated that 
old stopes and dumps contain 200.000 tons of ore averaging 
$5 a ton. which can be profitably treated by flotation. 

Clear Creeli County 

CRIST (Georgetown) — This property on Lincoln Moun- 
tain in Bard Creek District is scene of one of latest tungsti-n 
discoveries. 

SUNBURST (Georgetown) — This property on Democrat 
Mountain being developed through upper level by Lewis & 
Co., lessees. 

CAPITOT/ (Georgetown) — Arthur .lohnson and associates, 
who are driving west drift on Aetna vein, have opened 6-in. 
vein of high-grade ore. 

SIDNEY TUNNEL (Georgetown)— This tunnel driven into 
Pendleton Movintain has been cleaned out and repaired and 
de\'e]opment work is now in progress. 

VIRGINIA CITY (Georgetown) — Arthur Robert, lessee. Is 
performing dpvplnpment work through Lincoln t\mnel on (iOO 



level. Body of $50 ore has been opened and preliminary ship- 
ment been made to .Salld.a smeltery. 

BELLICVUE HUDSON (Georgetown) — This Colu!nr,ia Moun- 
tain property to be reopened and developed bj :,-roup of 
Denver capitalists headed by Hugh Mackay. .Shaft Irom the 
Bellevue level is to be repaired and sunk below 300- ft. level. 

GOLDEN CYCLE (Dumont) — Shaft sunk 115 It. on Golden 
Cvole claim of Portland property on Albro Mountain will be 
Bunk additional 100 ft. to further prospect streaks of rich 
ore already opened. Contract awarded to L. Clark of Dumoni. 
J. W. Smith is manager. 

BIG FIVE TUNNEL (Idaho Springs) — Arrangements made 
to advance this tunnel 1,000 ft. to total length ot 10,053 ft. 
Work will be done under contract and company is ready to re- 
ceive bids. Compan.v will furnish power, transmission, tim- 
bers, track and air pipe, while contractor must supply his own 
drill equipmint. powder, caps. fuse. etc. Breast of tunnel is 
now within 250 ft. of Gilpin County line. D. A. Barry is 
superintendent. 

San Juan County 

NORTH ST.\R (Silverton)— Property recently acquired by 
J. H. Slattery; being cleaned up pieparatory to resumption of 
operations in both mine and mill. An extensive campaign of 
development is planned. 

KITTTMAC (Silverton) — Connection between upper and 
lower workings completed, resulting in first-class ventilation. 
Development work is in progress. New tube mill has been 
ordered for mill which has been equipped to treat ore by 
flotation process. Mr. Walter is manager. 

GALTY BOY (Silverton) — First important shipment of 
tungsten concentrate in San Juan County was made recently 
from Yukon mill. Ore was produced from Shafer-Paul lease. 
Amounted to about 2 Mi tons, averaging 72% tungstic acid. 
Ratio of concentration was 10: 1. Ore is hiibnerite in quartz 
and minerals separate freely. Result of this mill run will 
increase interest in prospecting for tungsten. 

San MiKuel County 

CARRIBEAU (Ophir) — On Jan. 16. 1916. entire property of 
this company will be sold at public autcion in Telluride. Colo.. 
to satisfy a judgment of $5,000 and accrued interest. 

SILVER BELL (Ophir Loop) — Contract let to extend two- 
compartment raise from mill level to highest level opened in 
property, distance of 60,S ft. Raise is designed to accomplish 
both development and ventilation. Frank E. Trumble is 
manager. 

ID.VHO 

Shoshone County 

RAY-JEFFERSON (Wallace) — Boarding house and mess- 
house destroyed by fire. Will use tents till new buildings 
completed. 

RED MONARCH (Spokane) — This company. recently 
formed to take over Red Monarch group on Missoula Gulch. 
Beaver district, is building boarding house and compressor 
house. Two veins being explored, one by driving and other by 
diamond drill. 

SUCCESS (Wallace) — Development being pushed; reserves 
having been some^vhat depleted through crowding of produc- 
tion to take advantage of high zinc prices. Driving under 
wav on 1,200 level in both directions; planned to deepen shaft 
at once to 1.400. 

AURORA-SAMPSON (Wallace) — Reported that Aurora- 
Sampson and H. E. M. will be consolidated. Properties adjoin 
and Aurora-Sampson is working through H. E. M. tunnel. 
Latter company lonstructed 100-ton concentrator during sum- 
mer but insufficient ore is available to keep it running stead- 
ily. Aurora-Sampson is said to have 3 ft. of milling ore in 
face of drift. 

REX (Wallace) — Consolidation of two Ninemile properties. 
Rex and Black Bear Consolidated, seems to be assured. By 
terms of agreement Rex obtains 250.000 shares of Black Be.ir 
treasury stock for $112,000 in monthly payments extending 
over period of 10 months. Black Bear stockholders have also 
given Rex an option on 500,000 shares of issued stock at 27c. 
Claims extensively developed. 6.000 ft. of work having been 
completed. Peter Bernier is manager. 

MICHIGAX 
iron 

LAKE ANGELINE (Ishpeining) — Likely will be stripped. 
New ore deposits are being found by drills. In one place 
ore is only 15 ft. under sui-faee. 

REPUBLIC (Republic) — More ore is coming to surface than 
at anv time in mine's history. Regular daily shipments being 
made'to plant of the Algomah Steel Co.. Soo, Ontario. Ship- 
ments will continue all winter. 

.TUNCTION 40 (Ishpeming)— rWork on shaft will be started 
soon. Pipe line from North Lake to Cliffs shaft mines will 
be tapped to supply air for drills. Hoists, compressor and 
other machinery ordered. 

MORRIS (Ishpeming) — New drifting record made in 
November. Motor-size drift extended 44S ft.; two S-hr. shifts 
worked; two drills were employed; Thanksgiving meant loss 
of a dav; work carri.d on onlv 16 hr. out of every 24; drifting 
in hard" rook. Working over 1.000 ft. from shaft; all dirt has 
to be trammed there by hand. 

MIWRSOT.V 
l^leNnhl Range 

SNYDER (Nashwauk) — Interstate Iron Co. has taken lease 
of this 40-acre tract. Butler Bros, have been given contract 
to strip, "n'ork started thl." week. 

JMINORC.A (Virginia) — Operations suspended. Mine was 
worked for eight years. Was operated by Republic Iron and 
Steel Co Men will be given work elsewhere. 

SELLERS (Ilibbing)— Winter stripping has started. Two 
shovels and four locomotives are being kept busy in pit 
More will be added Stripping Is also under way at big Mahon- 
ing pit. 

ST. JAMES (Aurorn> — After being closed nine years, mine 
Is to be worked again. Was operated but short time when 



32 



THE ENGINEERING & MINING JOURNAL 



Vol. 101, No. 1 



all work stopped. Corrigran, JIcKinney & Co. hold lease. 
Preparations now being made to start mining. 

DEAX (Buhl) — Stripping started again. About 1.000,000 
cu vd. will be removed. Three shovels and 170 men now 
working. The first stripping contract called for removal of 
4 000.000 cu.vd. This was just about completed when new 
contract was let to same concern. Original contract was larg- 
est ever awarded on Mesabi range. Todd Stambaugh & Co. 
hold lease from Arthur Mining Co. 

MOXTAN.*. 
Silver Bofv County 

BUTTE & LONDON (Butte) — Shaft sinking going ahead at 
rate of about 4 ft. per day. Shaft is running through good 
hard Butte granite. Rainbow Development Co. is doing work 
under contract. 

DAVI.'i-DALT (Butte) — Twelve feet of high-grade copper 
ore opened up in drifting on Hesperus vein on 2.500 level of 
Colorado mine. Indications are that orebody will prove one 
of best in Butte. Crosscutting to find vein extension where 
faulted is being pushed rapidly. 

PILOT BUTTE (Butte) — Supreme court sustained district 
court of Silver Bow County in action brought by Anaconda 
Copper Mining Co. against Pilot Butte. Latter appealed from 
order granting injunction to plaintiff company by which Pilot 
Butte was restrained from mining in disputed territory. 
Plaintiffs won in district court and Tatter's ruling is affirmed 
by above ruling of supreme court. 

BUTTE & SUPERIOR (Butte) — Monthly report for Novem- 
berber filed in federal court in compliance with order pending 
outcome of suit with Minerals Separation Co.. shows that 
47.672 tons of ore were treated in flotation section of com- 
panv's mill at cost of $2.91 per ton. Operations resulted in 
production of 10,836 tons of concentrates, valued at $90.58 a 
ton. 

BUTTE DULUTH (Butte) — Pending approval by district 
court of an agreement reached between Manager Rohn of 
East Butte and Captain AVolvin of Butte Duluth, preparations 
are being made for resuming operations at the Butte Duluth 
under direction of Mr. Rohn. Whether plan means taking 
over of Butte Duluth by East Butte or an arrangement by 
which Mr. Rohn will merely act in personal capacity with 
backing of East Butte interests, has not been divulged. Butte 
Duluth was closed down last spring when property went into 
hands of receiver, followed by bankruptcy proceedings that 
tied it up for many months. 

ANACONDA (Butte) — .lames M. Porter, of Spokane, Wash., 
stockholder in Douglas Mining Co., reports that Douglas mine 
in Pine Creek district of Cfeur d'Alenes, has been taken over 
by Anaconda company under 3-yr. bond and that company 
will builci mill and install adequate plant to operate property 
at capacity. To carry on systematic development of com- 
pany's zinc mines in Butte. James J. Carrigan, formerly of 
safety-first department, has been appointed assistant superin- 
tendent and will have charge of Emma, Lexington, Alice, 
Nettie and Poulin mines which are being developed chiefly 
for their zinc contents. 

\EV.\D.\ 

Clark County 

.\NCHOR (Goodsprings) — Property now shipping about 300 
tons of lead concentrate and 200 tons of zinc ore per month. 
R. W. Moore is superintendent. 

GRKI:N' MONSTER ((joodsprings) — Zinc ore has been de- 
veloped on 300 level. Arrangements are being made to facili- 
tate hauling by connecting road with tramway of Yellow Pine 
Mining Co. 

QUO VADIS (Las Vegas) — Quo Vadis Gold Mining Co. has 
been organized by Las Vega.s men to operate property near 
Las Vegas, at which gold ore of high grade was discovered 
few months ago. 

AZ.-VLIA (Goodsprings) — Has acquired Surprise group, 
situated about 2 ml. west of Goodsprings: force of men 
engaged in development worlt. Planned to erect aerial tram- 
way from workings to main road. 

SULTAN (Goodsprings)— 50-ton dry concentrating plant 
completed early in December; in successful operation. Steb- 
bins tables used to effect a separation of oxidized lead and 
zinc minerals. Work Is in charge of Henry Robbins, owner 
of property. 

■V'ELLOW PINK (Goodsprings) — Ore has been encountered 
on 800 level. 250 ft. south of main shaft: evidently extension 
of main orebody which faulted at 700 level, and should result 
In greatly Increasing ore reserves. Order placed for 75-hp. 
Diesel engine to Increase capacity of mine power plant. 

BOSS (Goodsprings) — This property, which was under bond 
to Platinum Gold Mining Co. has reverted to original owners. 
Br.s? Gold Mining Co. Operations resumed with force of men, 
undi r management of O. .1. Flsk. Experiments being made 
for treatment of gold-platinum ore, of which there is con- 
siderable tonnage blocl<ed In mine; In meantime, copper- 
carbonate ore win he shipped to Salt Lake smelters. 

CHRISTMAS (Goodsprings) — Doran and Zenzen. former 
owner.s iif this property, have incorporated under name of 
Christmas Consolidated Mines Co. Property has blocked con- 
siderable tonnage of lead-silver ore of milling grade, and 
stock has been sold for further equipment of property. In- 
tention to ereet siiinll compressor plant at once. In order to 
use air drills; experimental work In concentratlnR ore Is to 
be performed. 

RunieralilR County 

r.TAMONDFTKLD BLACK HUTTK RKORGANTZFD (Gold- 
fleld) — Has placed compressor and drilling equipment at 
Dortch shaft to assist In development of Marine base. This 
lease recently encountered small shoot of good ore. 

\ye f'oiinty 

TONOPAH EXTENSION (Tonopah)— Cleanup for latter half 
of .Vovembcr resulted In shipment of bullion and concentrates 
valui'd at SSI.noO; record for plant to il.ite. Sorting plant 
and ore bins are to be erected at Victor shaft In anticipation 
of connection soon to be made with workings of No. 2 shaft. 



WEST END CONSOLIDATED MINING CO (Tonopah) — De- 
velopments on lower levels of mine continue encouraging. 
Sloping is in progress from the 4, 5. 6 and intermediate 
levels. ' 600-(r; slope, which attained maximum width of 30 
ft., still produces large tonnage of excellent ore. 

CALIFORNIA & TONOPAH (Tonopah) — Small stringers of 
excellent ore encountered in limited development in early 
(lays of camp. It is reported Tonopah Mining Co. will under- 
take development of this ground under an option, terms of 
■which have not been made public. Repairs are being made to 
main shaft and work underground will start as soon as 
these are completed. 

Storey County 

ALPHA & EXCHEQUER (Virginia) — West drift on tunnel 
level shows red clay with some quartz at S6-ft. point. 

OPHIR-CON. VIRGINIA (Virginia) — Joint west crosscut, 
2,700 level, in porphyry and streaks of quartz at 182-ft. point. 

OPHIR CENTRAL TUNNEL (Virginia) — South drift 250 
level in low-grade quartz. Extracted 345 cars of ore from 
stopes and 295 tons milled. 

COMSTOCK PUMPING ASSOCIATION (Virginia) — Repairs 
to 2,700 level drifts and the Ophir shaft continued; pumps at 
C. & C. shaft working successfully. 

MEXICAN (Virginia) — Prospecting continued on 2,500 and 
2,700 levels through porphyry and quartz. Mill received 413 
tons of custom ore averaging $22.29 per ton; four bars of 
bullion shipped. 

UNION (Virginia) — Extracted from No. 2 stope, 2,500 level 
189 tons of ore averaging $32.09 per ton: from north end No. 3 
stope. 19 tons averaging $11.42 per ton; from raise in No. 1 
stope 50 tons averaging $19 per ton. 

■ SIERRA NEVADA (Virginia) — Advanced west crosscut on 
2,500 level to 7S-ft. point and passed througli IS-in. stringer 
of quartz assaying from $36 to $100 per ton. Saved from west 
crosscut 20 tons averaging $9.17 per ton; from footwall side 
of stope 62 tons averaging $12.84; from stope 50 tons averag- 
ing $1S.S8 per ton. Shipped to Mexican mill 132 tons of ore, 
gross assay value $1,934.44. 

UNION CONSOLIDATED (Virginia) — Saved from 2,400 level 
35 tons of ore averaging $50.80 per ton; 82 tons averaging $29 
per ton saved from raise in No. 1 stope; 72 tons averaging 
$8.95 per ton from north end No. 3 stope; 122 tons averaging 
$25.08 per ton from No. 2 stope. Installing hoist in 2,400 level 
raise; top of raise in No. 1 stope in $25 ore; "west crosscut 
from top of this raise shows $44 ore in face. Northwest drift 
on sill floor disclosed $12 ore in face. 

CROWN POINT-BELCHER (Gold Hill)— North drift 1,600 
level advanced 18 ft.; saved 114 cars of mill rock; 60 cars of 
mill rock saved from sill floor of No. 1 stope. Jacket mill 
received 611 tons of dump rock and 190 tons of mine rock. 
Shipped bar of bullion. E. B. Sturges visited mines and ex- 
pressed himself as much encouraged regarding the situation 
in the property where operations were broken off by fire last 
December, which closed 1,500 and 1,600 levels. The 1,600 
level is now to be further prospected and outlook is favorable 
for large tonnage of ore to show profit. I*roperty is well 
equipped with modern macliinery for economic work and 
steady advance is being made in deepening mine. 

\EW .lIE.\ICO 
Dona .\na County 

BEAR CAN'ON (Las Cruses) — Will soon be cleaned up, 
dump sorted and carload of lead, zinc and silver ore ready for 
shipment to El Paso smelter. C. T. Boyd, of Los Angeles, will 
put men to work to get property in shape for extensive oper- 
ations. 

Grant County 

MEEKER MINING (Pinos Altos) — Has begun work on 
3-compartment shaft. 

CARLISLE MINE (Steeple Rock)^Unwatering of old Car- 
lisle has been commenced by W. B. Duvall wlio has taken 
property under option. Machinery being sent to mine from 
Duncan. Ariz. 

CHINO COPPER (Santa Rita) — Company is working about 
900 men underground and payroll for mine and mill amounts 
to about $110,000 per month. Twenty-one locomotives are 
being used by company. 

WHITE CAT TUNGSTEN MINES (White Oaks)— Eastern 
syndicate, represented locally by Richard Welghtman as man- 
ager, which recently took over Wild Cat mines here is doing 
extensive development. Old dumps said to contain large 
amounts tungsten. 

EMPIRE ZINC (Pinos Altos) — Started 150-ton concentrator 
at its Cleveland mine. George Miltenberger in charge of 
electrostatic mill. Concentrates trammed by horses from 
company's ore bins to Santa Ff Ry. few miles below Silver 
City. About 100 men employed in mine and mill. 

SILVER CELL (Pinos Altos) — This group of six patented 
claims and two homesteads of IfiO acres each, together with 
buildings, smeltery and other machinery has been taken over 
under h(md and option by Hilarlo Lozoya, of Mexico, tem- 
porarily refugeelng in El Paso. Mine is about 15 years old 
but has not been worked for 12 years until last summer. 
Vein 1 ft. between walls was struck last summer, of which 
4 to 10 In. was native silver. In gangue of calc-spar. Sample 
from vein got blue ribbon at .San Diego fair. Mine Is devel- 
oped with 345-ft. shaft; with laterals on three levels 100 ft. 
apart; 45-hp. steam hoist: IB-hp. engine: drills and com- 
pressor and 40-ton smeltery. Fifty men will be put to work 
at once. 

Otero County 

OLD TIFFANY (Jarllla)— O. D. Warnock, of Artesia, N. M., 
has leased and bonded from the Alabama Consolidated Copper 
and Gold Mining (^o. a group of 5 or 6 claims situated on Gov- 
ernment Hill, southwest of Price station. Property contains 
the old turquoise workings of the Tiffany jewelers, worked 
about 25 years ago. Fifteen years ago W. H. H. Llewellyn 
sunk shaft on narr<iw streak of quartz carrying gold; is be- 
lieved vein leads to large ore shoot. On Monogram claim 
prospecting has been done on outcrop of Iron, carrying some 
copper; entire face of fiO-ft. drift Is In chalcopyrite. ' 



Jaimar}- 1, 1916 



THE ENGINEERING &- MINING JOURNAL 



33 



Sierra County 

LOOKOUT (KlnKston)— Davidson & Co., has taken lease on 
mines owned by Webster and Parker. Operations will begin 
at once. 

SOl'TH D.\KOT.\ 
I*a«'renoe County 

RCHO (Maitland) — At dtptli of 200 ft. lateral work i.s 
under way. 

RATTLESNAKE JACK (Galena) — Plant has resumed oper- 
ations after suspension brought about by protests of farmers 
complaining of pollution of Bare Butte Creek by tailings. 

TROJAN (Trojan) — Capacity of mill has been increased by 
putting in commission both Trent Chilean mills with which 
plant is equipped. With everything in good order this .should 
give plant capacity of 400 tons daily. Mine is in splendid 
shape to furnish this tonnage for long period. 

WASP NO. 2 (Flatiron) — Car of high- and medium-grade 
wolframite ore now being prepared for shipment, expected to 
bring $48,000 gross. Concentrating plant for handling low 
grade completed and in commission: cost, about $5,000; will 
handle tungsten ore on dump estimated to contain $100,000 
net. Gold mill running 250 tons daily. 

OFBR GOLD MINING CO. (Deadwood) — This is new cor- 
poration backed by New York men never before interested in 
Black Hills mines, has purchased all property and assets of 
Imperial Gold Mining Co. Production has commenced, ore 
from Burlington Apex group, at Trojan, going to Mogul mill, 
and from American Express, in Blacktail district, to New 
Reliance mill. Company plans to either purchase or construct 
milling plant next spring. W. S. Elder is general manager. 

HOMEST.\KB (Lead) — By increasing weight of stamps to 
1.000 lb. and adopting secondai-y crushing at B. & M. shaft 
(which will be principal ore-producing shaft when new equip- 
ment is complete) is calculated capacity of mills will be in- 
creased about IS'^. This makes daily capacity over 5,000 tons. 
Carload of mixed grade tungsten ore being prepared from 
workings on Durango and other properties on West Lead hill, 
purchased some years ago from Hidden Fortune company. 

Pennineton County 

NEW GOLDEN WEST MINES CO. (Rochford) — Corpora- 
tion organized to take over holdings of Golden West company, 
on basis of $1 worth of new 7% preferred stock for each $10 
worth of old stock, bonds and accrued interest. Property is 
regarded as one of best prospects in Rochford district, con- 
taining large quantity of low-grade ore. Small mill driven 
by water power, will be enlarged and equipped with cyanide 
department: mining will begin at once, but milling will not 
commence before spring. 

IT All 
Beaver County 

LPMRT & MOORE (Beaver City) — New shaft, being sunk 
at this property by United States Smelting and Refining Co. 
is down 40 ft. Gasoline engine is being h.auled to property 
from Milford via Beaver City. J. G. (Tlemons is in charge 
of operation. 

Juab County 

DALY-JUDGE (Park City)— Hcadframe for new hoist has 
arrived. Snake Creels tunnel in more than 13,375 ft., is head- 
ing for Daly-Judge ground. 

BONANZA KING CONSOLIDATED (Park City)— New com- 
pany formed to w^ork old New Y'ork Bonanza. Preparations 
for resuming work being made. 

SILVER KING COALITION (Park City)— Shipments for 11 
months of year amount to 37.945 tons. At present production 
is from 3,000 to 4,000 tons monthly. 

ONTARIO (Park City) — Preparations for more extensive 
operation being made. Power line being built from Utah 
Power and Light line to shaft: planned to install electrically 
driven pump (capacity 1,000 gal. per min.) on 1,700 level to 
lift water to drain tunnel on 1,500. It is expected to make 
profit from large tonnage of old stope fillings on 500 level, 
\vhich, with exception of these fillings, is being done in first- 
class ore: expects soon to be shipping low-grade ore from 
1.500, where there is large tonnage. 

Salt Lake County 

SELLS (Alta) — Ore opened recently at this property has 
been followed 140 ft., and in places is 12 ft. thick. Value is 
in silver. 

CARDIFF (Salt Lake) — Hauling conditions are difficult 
at present as roads down Big Cottonwood are cut up; sliip- 
ments are hampered. 

BAKER MINING (Salt Lake) — Some mineral carrying lead 
and silver has been cut by this company's tunnel. Property 
is east of Maxfleld mine. 

MAXFIELD (Salt Lake) — Shipments of lead-silver ore have 
been resumed from this property in Big Cottonwood. F. H. 
Vahrenkamp is general manager. 

AMERICAN CONSOLIDATED COPPER (Salt Lake) — 
Stringer of lead-silver ore has been cut in this company's 
tunnel in Big Cottonwood, northwest of Cardiff. L. L. Smith 
is manager. 

CARBONATE (Salt I-ake) — This property in Big Cotton- 
wood has two suits filed against it by J. M. Howell, who 
seeks to collect notes and other obligations, amounting to 
$20,000. During year leasers shipped ore valued about $10,000. 

SOUTH HECLA (Alta) — Shipments are in progress, and 
more ore teams are being added. New lease has been taken 
on Quincy tunnel level by Curry & Brain, about 600 ft. from 
Kate Hayes lease. Six inches of ore exposed, running well 
in silver and copper. There has been strike of high-grade 
ore in Langdon fissure on 250 level. 

WASATCH MINES (Alta)— New 3,000-ft. pipe line is to be 
laid at this company's power plant in Little Cottonwood. 
Grading is in progress. When line is completed, there will be 
about 400 hp. additional. An increase in capacity of plant 
has been necessary owing to large amount of work being done 
by mines of Little Cottonwood, to which company furnishes 
power. 



NEW UTAH BINGHAM (Bingham)— Returns from ship- 
ment of 37 >4 tons of ore; contents, 0.11."; oz. gold, 17,33 oz 
silver, 1.49% copper, 23.5% lead; total, $28.50 per ton. Costs 
in connection with this shipment were: Hauling and freight, 
7.")C. per ton; tine for sulphur less bonus for iron, $2.20; 
treatment, $1.15; sampling, 50c.: assaying, 8c.; total, $4.68 
per ton: net receipts, $23.82 per ton. 



Ontario 

BUFFALO (Kirkland Lake)— Structure of 100-ton mill has 
been comjilelcd and machinery ordered. 

SHERWIN-WILLIAMS (Boston Creek)— Six-drill compres- 
sor has been installed. Shaft is down 100 ft. 

ALEXO (Porquis Junction) — Made new record for nickel 
ore shipments in November; 1,305 tons sent to Mond Nickel 
Co. at Coniston. 

MILLER SYNDICATE (Boston Creek) — Small stamp mill 
being installed for testing purposes, and boilers and com- 
pressors are being brought in. 

OPHIR (Cobalt) — This property situated about half a mile 
south of the Temiskaming will be reopened and shaft, now 
down 300 ft., put down to 500 ft. 

TEMISKAMING (Cobalt) — Main shaft down 850 ft. and 
station cut at 835 level, from which crosscutting will be done 
to reach veins proved on upper levels. 

WEST DOME (Porcupine) — Plan for financial re-organiza- 
tion completed by underwriting of 1,000,000 shares of treasurv 
stock at 25c. Mine manager will be appointed and work 
started. 

PRESTON-EAST DOME (Porcupine)— Surface development 
is being undertaken to uncover veins cut in diamond drill- 
ing, result of which disclosed wide mineralized zone travers- 
ing property for about 2,000 ft. 

CROWN-RESERVE (Cobalt )— Owing to falling off of pro- 
duction, the Ontario government will no longer exact royalty 
of 10' r hitherto payable on output, reserving right to reimpose 
royalty should conditions improve. 

Mcdonough claim (Boston Creek) — Road cut to rail- 
road station for hauling in machinery now on way. Big vein 
has been traced for about 2,500 ft., with fine gold visible for 
entire distance. 

BEAVER (Cobalt) — Quarterly statement for period ended 
Nov. 20 shows $122,672 cash in hand and 220,01" oz. of silver 
in bullion and ore at smelters, in transit, and bagged. Ad- 
dition to mill has been completed and is now treating 125 to 
150 tons per day. 

CROESUS (Munro Township)^Is putting up large camp 
buildings on Leyson-Dobie property. Actual mining opera- 
tions have been curtailed owing to shortage of compressed 
air, but drifting is progressing on 100 level. Diamond drill 
installed for exploration at depth. 

McINTYRE (Porcupine) — Arrangements between this com- 
pany and Jupiter completed under which new^ company to be 
known as Mclntyre-Jupiter organized, to which Juoiter prop- 
erty will be transferred. Capitalized at $2,000,000 in $1 shares. 
Mclntyre takes 955,000 shares at $152,000, and Jupiter share- 
holders receive 943,893 shares in new company and $60,000 
cash. Mclntyre agrees to mill Jupiter ore at $2 p^r ton 
guaranteeing 95%' extraction. 

MEXICO 
Coahuila 

DEL CARMEN MINE situated just across the Rio Grande 
from Boquillas, Brewster county, Texas, is being worked by a 
large force of men. High-grade zinc carbonate is carried 
across boundary river by aerial tramway and is hauled with 
motor trucks to Marathon (Tex.), on .S. P. Ry. about 90 mi. 
northeast. 

Sonora 

EL TIGRE (Esqueda) — After enforced shutdown mine and 
mill have again started and regular output is again being 
maintained. 

MOCTEZUMA COPPER (Nacozari)— Mill again put in 
operation after about two months of idleness caused by the 
invasion of Sonora by Villa army. One unit started Dec. 18 
and other Dec. 21. 

BELEN MINE (Cumpas) — This property, operated under 
lease by S. M. Greenidge, has been working during all the 
trouble of last few months and there are now in Nacozari 
ready for shipment four cars of ore which will be shipped as 
soon as railroad is repaired. 

SOI TH A^IERICA 

nollvia 

PROPOSALS FOR EST.\BL1SHMENT OF TIN SMELTER- 
IE.S in Bolivia, have been received by the Bolivian Govern- 
ment, from David G. Pricker, representing the Wile Electric 
Furnace Co., of Pittsburgh and by Messrs. John C. Berry and 
J. C. Luitwieler. said to be representing a group of West 
Virginia caidtali.sts. The former company is prepared to in- 
stall the necessary jilant in Bolivia within six months, with- 
out asking any monopoly or privileges other than the guaran- 
tee of commercial and industrial freedom: the plants to have 
a capacity ranging from 150 to 250 tons daily. The latter 
bidders request the exclusive privilege of smelting tin by 
electricity in Bolivia for a period of 25 years and the right of 
using water power on a public domain or by legal ex-propri.a- 
tion, etc. 

AFRIC.\ 

Cape Colony 

C.\PE COPPER CO. (O'okiep) — Has declared a dividend 
of 3<;, making 6<n f«r the year, on the cumulative pref- 
erence shares, and Is. per share on the ordinary sh.ares. both 
less income tax, payable on Jan. 1, 1916. The transfer books 
closed Dec. 2. 



THE ENGINEERING 6- MIXIXG JOURNAL 

■ounniiiiDioiimiiiigmnuiiDiiiiiiuiiaiiiiiiiniaMiiiiiiiJnuiia 



Vol. 101, No. 1 



?pon 



iiiniiniMiniinnimminnniMnniiiiiiiimiiiiniiniiiin^^^^^ 



inimioiniiiiiiiiniiiiiiiniimniniiiiiii i i u 



iiiiiiiiiiniiriiiiiniiiiiiiiinMinniinnniniiiiiiniiiiinaiiinnniiiiniiiininiK 



Metal Markets 

NEW YORK — Dec. 20, 1915 

The outstanding feature of the week was the continued 
rise in the price of copper, which was of spectacular charac- 
ter. All of the other metals were strong, but in no case was 
there any material change of price. 

Copper, Tin, Lead and Zinc 

Copper — The volume of business during our last week of 
record was limited by the inability of producers to supply 
what was wanted. The principal producers report the sale of 
about all the copper they expect to produce during the first 
quarter of 1916. Only relatively small quantities for early 
Celivery are available from the smaller producers. The copper 
market has, therefore, entered upon a phase similar to what 
has existed in spelter, and similar to the conditions that pre- 
vailed in the latter part of 1906. The mines could readily 
produce more copper, but production is now limited by the 
refinery capacity, which is taxed to the utmost. 

On Dec. 23 sales were made early in the day as low as 
20 %c., cash. New York, but by the end of the day about all 
of the producers were realizing 20?4c., i.e., 21c., r.t. From 
this time onward there was a steady advance. On Dec. 2S. 
the market became firmly established at 22c., r.t., and million- 
pound lots were sold at that price for delivery next May. For 
January-February delivery a premium was paid, but there 
was practically no market for that delivery, most producers 
being sold out until March, and some of them even further 
ahead. On Dec. 29 the market opened at 22c., r.t., but before 
the end of the day 22>,4c., r.t., was realized, and there was talk 
about 22 %c. having been got. Copper for forward delivery 
was still to be had. however, from the large producers at 22c., 
r.t. The market was irregular, owing to the inability of many 
of the producers to supply the particular deliveries desired 
by buyers. 

The London market rose steadily during the week. On 
Dec. 20, £10S was realized. 

Copper SheetH have been advanced and the base price is 
now 27c. per lb. for hot rolled and 2Sc. for cold rolled. Usual 
extras charged and higher prices for small quantities. Cop- 
per wire is 22^4® 23c. per lb., carload lots at mill. 

Copper ExportM for the week ended Dec. 11 are reported 
by the Department of Commerce at 15.793,210 lb., the larger 
shipments being 5,599,216 lb. to France, 4,282.917 lb. to Italy, 
3,354,471 lb. to Great Britain and l,S37.r>26 lb. to Sweden. Im- 
ports were 4,855,763 lb. metal and 2,614,751 lb. in matte; 
7,470,514 lb. in all. The larger imports were from Peru. Can- 
ada, Cuba and Chile. 

Tin — A good business was done at prices changing but 

little. The market was full of rumors about what was going 

to Ik- done by Great Britain in the way of restricting exports. 

The.«e rumors probably played a part in this market, but the 

• al basis for its strength was undoubtedly the strong con- 

uinptive demand. 

Tin output in the Federated Malay States in November was 
<;r.,7:i9 pikuls. For the 11 months ended Nov. 30 the total was 
44.691 long tons in 1914 and 42,609 this year: a decrease of 



;,os 



tor 



I,i-nil — This market was strong but quiet. However, during 
the 1 St ,lay or two producers reported an increased volume 
of iniiuiry. Otherwise, there was no special feature of In- 
teri-sl Thi' trade is imbued with the Idea that we may be 
sitting on a volcano in lead as was the case in copper. Some 
producing Int. rests appear to be holding rather aloof. Others 
are so well sold ahead that they have but little lead to offer 
anyhow. 

Spelter — The situation In spelter has continued about the 
same aH we reported last week. The aggregate of the bus- 
iness done was relatively light. There was some trining 
business In prompt deliveries, as high as 17|.4c. being re- 
ported realized, although 17fil7^4i'. Is probably nearer the 
MVerage. There was .i fair volume of business for first- 
quarter delivery which w.ts done at ISSiie^ic, and a little 
higher toward the close. There was considerable busln"ss 



for second-quarter delivery at 13%@14c. All producers 
seem to be anxious to sell for that delivery, but there are 
not many buyers. The confusion that prevails in this mar- 
ket is indicated by the following: A consumer needing spel- 
ter for February delivery obtained offers on Dec. 2S from 
eight producers whose offers ranged from I614 to 17Vic., 
two being at 16V4c., at which figure the business was placed. 
For a 250-ton order for later delivery, offers ranged from 
14 to 14?4c., the business being placed at 14c. 

Zinc Sheets are in demand, but the base price still remains 
at $22 per 100 lb., f.o.b. Peru. 111., less S% discount. Railroad 
embargoes and delays are making a great dial of trouble 
about deliveries. 



DAILY PRICES OF METALS IN NEW YORK 







,j 


Copper 


Tin 


1,03(1 


Zinc 




■i~. 


J3 


j^.a 


X 


.0 




















■5 S 


^. a 


I 0. 


.1 


^fe 


ga 


Ig, 




&■§ 


> 0! 






E- 




•-1 ^ 


Dec 


mH 


55 


HO 


t»C 


z6 


SS 


So 








20 i 




5.40 


5 30 


15.00 


23 


4.7275 


54 


(?205 


39 


@5 45 


(d 5 35 


(5)16.50 








20J 




5.40 


5 30 


15 00 


24 


4.7275 


531 


(«21i 


39i 


®5 45 


C«5 35 


®16.50 


25 






















21 




5.40 


5.30 


15.00 


27 


4.7275 


53{ 


^21 


391 


®S.45 


^5.35 


©16.50 








21 




5.40 


5.30 


15.00 


28 


4 7313 


54J 


^21 


39} 


®5.45 


(a 5.35 


©16.50 








21 




5.40 


5.30 


15.25 


29 


4 7:J50 


54; 


(3 22 


39 


@5.45 


(115.35 


®16.75 



The quotations herein are our appraisal of the average markets for copper, lead, 
spelter and tin based on wholesale contracts for the ordinary deliveries of the trade 
as made by producers and agencies; and represent, to the best of our judgment, 
the prevailing values of the metals, reduced to basis of New York. cash, except 
where St. I.ouis is piven as the basing point. St. Louis and New York are normally 
quoted 0.17r. apart. 

The quotations for electrolytic copper are for cakes, inpots and wirebars 
Electrolytic copper is commonly sold at prices including delivery to the consumers 
and is subject to discounts, etc. The price quoted for copper on "regular terms" 
is the gross price including freiglit to the buyer's works and is subject to a discount 
for cash. The differenrc between the price delivered and the New York cash 
equivalent is at present about 0.25c. on domestic business. The price of electro- 
lytic cathodes is O.O.t to (1.10c. below that of electrolytic Qtiotations for leatl 
represent wholesale transactions in the open market for good ordinary brands. 
Quotations for spelter are for ordinary Prime Western brands. < >nly the St. Louis 
price is herein »iuoted. St. Louis being the basing market. We quota the New York 
price at I7c jmt 100 lb. above the St. Louis price. 

Silver quotations are in cents per troy ounce of fine silver- 
Some current freight rates on metals per 100 lb. are: St. Louis-New York 
17c.; St. Louis-Chicago, 6.3c.; St. Louis- Pittsburgh. 13.lc. 





Sil- 


Copper 


Tin 


I,ea.l 


Zinc 




Standard 


Electrolytic 


Spot 


3M09. 


£pcr 
Ton 


Cta. 


£ |)er 
Ton 




1 


Spot 


3 Mo8. 


Ton 


Cts. 

!fb^ 


< 1 

I" 
1 1 


23 
24 

2.5 


25 H 
25! 

2.^i 
26 


841 
841 


84 J 
84J 

.S5! 
86 


101) 
103 


21.39 
21.71 


166 
168 


187 
169 

169 

1081 


29 

291 

29J 
291 


6.12 
6 17 

6 23 
6.31 


90 
90 

... 

90 
90 


l.s 

IS 


27 
28 
29 


107 
107 


22.55 
22. 56 


167J 
167J 


18.98 
18.99 



The nbiivc liibli- irivis tlic climiiig <iui)tBlinna on Lonih.n Melul Exc1iiiii>.n , 
All prices arc in pounds Hterlintz per ton of 2240 It>., except silver vvliich is in pi.rirr 
per troy ounce <if Ktc rling silver, 0.92S (inc. Cipper quotnlions aro for alnn<i:ir.l 
conpiT. spot and thr<'< nmntlis. and for clcctrol^vtic, price (or tlic lallcr IxImk 
subject ti) ;{ \vT rent, di.scount. I-or convenience fn conip»ri«ton of London pric,'.s. 
in pouniis Hlirlinii per 2240 lb., » ilh American prices in cents per pound tlie follow- 
inii approxinniic ratios an giveii. rt'ckoninn exchange at 4.S0. £ 15 = 3.21c.; 
£20 = 4 2(lc.: £30 - O.Ctc; £40 - 8.57c.; £00 - 12.86o. Variations, £1 = 
0.21|c. 



Jiimuirv 1, 19iri 



THE EN(;iNEKIMN(; er MINIXG JOITK.VAL 



35 



Other Metals 

NEW YORK — Dec. 2lt 

Aluminum — More metal seems to be available now for 
early delivery, while on the other hand the demand is less 
pressing. The market is easier and prices have receded from 
the highest level. Current quotations are 53ig)55c. per lb. for 
No. 1 ingots, New York. 

Antimony — The market has been rather quiet during- the 
week, with only moderate demand and a little better sup))ly. 
Prices are firm, however, quotations for Chinese and other 
ordinary brands being 39(fi40e. i)er lb., New York; while 
Cookson's is held at 55c. 

QulcliNllver — There has been a fair demand with limited 
supplies and the price is strong. New York quotations are 
$1.tO per flask of 75 lb. for large lots; $150 up for smaller 
orders, one or two sales up to $155 being reported. .San 
Francisco reports by telegraph fair sales at $120 increasing 
to $130 at close of the week. London price is £16 15s. per 
flafk, with no discount from second hands. 

Nickel — The market is quiet and steady, with a good de- 
mand. Quotations are 45(5)500. per lb. for usual forms, ac- 
cording to size and terms of order. A premiuin of 5c. per lb. 
is charged for electrolytic nickel. Monel metal is in demand 
and good sales are reported. 

Minor Metals — Current quotations for Bismuth are $4 per 
lb.. New York. — Cndmium is quoted as ligSs. per lb. in London; 
$1.75 fl> 1.90 per Hi.. New York. — C'lironiinm metal. 75c. per lb.. 
New York. — Cobalt metal. 97'; pure, is sold at $1.25@1.50 per 
lb. — MagneHiuni, pure, holds to a high price, $6 per lb. being 
asked. — Selenium varies from $2.50® 3 per lb.. New York, for 
large lots; $4.50(8)5 for retail quantities. 

EIXPORTS A>D I.HPORTS 

Exports anil Imports of Secondary Metallic Products in the 

United States nine months ended Sept. 30, in pounds: 

Exports ■ Imports 

1914 1915 1914 191.5 

Copper sulphate. 7,14n,2:« 10,134,821 

White lead l:i.n7_>. 261 18,529.278 

Zinc oxide 2.1,:;'.li,„1.-,7 31,111,.580 

Zinc dust l:iL',."i^i:i 371.678 3,079,979 1.173, .512 

Zinc dross..- 1,M2,047 8,273,986 

The exports of zinc dust reported were all reexports of 
foreign material. 

Imports and E.xports of Metals other than iron and steel 
in Great Britain 10 months ended Oct. 31, in long tons: 



Metals; 1914 

Copper .. 146,798 

Tin 34,870 

Lead 183,l:i2 

Zinc 110.244 

Quicksilver 1.229 

Minor metals 6,3(i0 

Ores. etc. 

Tin concentrates 29,841 

Pyrites 695,373 

Copper includes contents of ( 
reexports of foreign material. 



191.1 
174.900 
34.849 
213.192 
73.743 
1,003 
4.269 



1914 
45,860 
36,981 
44,951 

7,148 



le and matte. Exports include 



Gold, Silver and Platinum 

MiW V(»KK — Dee. ail 

Gold — A shipment of $1,000,000 in gold coin from New York 
to Buenos Aires is reported this week. It is expected that 
riore gold will go to Argentina shortly. Some additional 
gold has been received from London. 

Platinum — Sales have been ver.v sinall, largely because 
there is little to sell. Dealers decline to make prices except 
to regular customers. The market is very much in the air 
and it is very diflicult to name prices. A small sale is reported 
at $85 per oz. for refined platinum, but as high as $D5 has 
been paid in other cases. 

Sil%'er market has been dull owing to the inaction of holi- 
day times. The improvement of exchange, however, has added 
to the value of the New York price. The tendency is towards 
a slight advance. 

The President of Uruguay has recommended to Congress 
the passage of a bill providing for the coinage of 5,000,000 
pesos in silver pieces of one peso ($1,034) and one-half peso 
($0,517). Old coins of these denominations are to be retired 
and recoined. This amount is equivalent to 3.80 pesos ($3,929) 
per inhabit.ant. and it is estimated that it will be sufficient 
for a number of .vears. The profits realized from the coinage — 
should the bill pass — are to be used for the improvement of 
roads and construction of public buildings. 



Exports of silver from London to the East, Jan. 1 to Dec. 1, 
as reported and valued by Messrs. Pixley & Abell: 

1914 1915 ChanKCS 

India £4,67!t,.5(M) •3..5.52.00O D il,127..TO0 

f'hina. 42,000 7,000 D. :5.5.0O0 

Tot:.l i4,721 ,.500 13,359,000 D. £1,1C2,,500 



Palladium — Sales have been reported recently at $43@ 

50 per oz. for this metal. 

Iridium — Sales have been reported as high as $110 per 
oz. Dealers will not quote and every sale is a matter of ne- 
gotiation. It is impossible to give any regular quotation. 

Zinc and Lead Ore Markets 

.lUPl.lN, MO. — Dec. 34 

Blende, high price, $117.50; base per ton 60'/, zinc, premium 
ore, $115; medium and lower grades down to $100; calamine 
base, $75(5)65, 40% zinc; average selling price, all grades of 
zinc, $94.20 per ton. Lead ore, high price, $72.70; base per 
ton SO',', metal content, $70@72; average selling price, all 
grades of lead, $70.i>4 per ton. 

SHIPMENTS WEEK ENDED DEC. 24 

Blende Calamine Lead Values 
Totals this week. . . 14,724,550 2,224,930 2,009,650 $869,790 
Totals this year... 582,044,330 46,854,880 91,273,460 $27,190,640 

Blende value, the week, $726,950; 52 weeks, $23,464,480. 

Calamine value, the week, $71,540; 52 weeks, $1,227,830. 

Lead value, the week. $71,300; 52 weeks. $2,498,330. 

Shipping conditions were ideal and this was deemed an 
opportunity to load out some long purchases, and the result 
proved it, as Friday it rained, turning to snow in the evening, 
and on Saturday the district was well blanketed with the 
Christmas white, quite unusual in this latitude. Light thaw- 
ing has put the roads in a bad condition for wagon hauling. 

PL,.*TTEVILI>E, WIS. — Dee. ST. 

The base price paid this week for 60% zinc ore was $9S(S) 
110 per ton. The base price paid for 80% lead ore was $70 
per ton. 

SHIPMENTS WEEW ENDED DEC. 25 

Zinc Lead Sulphur 

Ore, Lb. Ore, Lb. Ore, Lb. 

Week 4,884.000 156.200 470,400 

Year 208 094,750 7,351,740 29,558.910 

Shipped during week to separating plants. 4.220.000 lb. 
zinc ore. 

Iron Trade Review 

^■E^V YORK — Dec. 29 

The most serious question in the iron and steol trades 
just at present is that of transportation. The embargoes 
on the railroads leading to the seaboard and the delays else- 
where are interfering with the deliveries of finished products 
from the mills and with the supply of raw materials and 
coke to mills and furnaces when they are badly needed. 

The blockade of export business, however, has helped the 
mills in one way, by giving them an opportunity to fill home 
orders with less delay than would otherwise have been re- 
quired. Many orders are pressing and consumers are begin- 
ning to place contracts for second-half business, though many 
mills are rather holding back and are not anxious to contract 
so far ahead. 

The pig-iron market continues strong and active, though 
there has been a slight lull owing to the holidays. Some 
furnaces are having difficulty getting coke and a few have 
been obliged to bank for a time. Deliveries of pig from 
merchant furnaces have been more or less delayed in a num- 
ber of cases, especially in seaboard territor.v. 

The Cambria-Youngstown-Lackawanna steel merger still 
hangs fire, or approaches completion very slowly. Some defi- 
nite conclusion was promised this week, but has been again 
postponed, and full information, it is said, will now be ready 
next week— which may or may not be realized, as there .tre 
manv points yet to be settled. 

Imports at Baltimore for the week included 1,139 tons 
ferromanganese from Liverpool and" 7,000 tons manganese ore 
from Bombay, India. Brazilian ore seems to be coming for- 
ward more slowly. 

PITTSBIRGH — Dec. 2.S 

Despite the general tendency toward holiday dullness in 
the steel trade, a great deal of business is being booked. 
.Specifications are heavy on contracts that expire with the 
close of the month, buyers recognizing that on account of 
the lowness of prices involved in such contracts the mills 
will give them no leeway in filing specifications. New bus- 
iness is coming up In various unlooked-for ways. For in- 
stance, while the shipyards are known to be filled to 



36 



THE EXGIXEERING & MIXIXG JOURNAL 



Vol. 101, No. 1 



capacity far ahead, there are negotiations now for vessels 
to be built after existing business is cleaned up and mills 
are receiving inquiries for steel for very late deliveries, 
largely in 1917. On specific orders of this character the 
mills are ready to quote, no matter how late the delivery. 
On open contracts they will not sell even for the third 
quarter of next year. An advance from the present price of 
l.SOc. for bars, plates and shapes is expected next week. 

Export shipments from the steel mills are now very light, 
on account of the railroad embargoes, and shipments to the 
domestic trade are being correspondingly increased. The 
mills are making every effort to place the additional steel 
with customers jvho need it most, and the inherent strength 
of the situation is shown by the eagerness with which such 
additional steel is accepted. 

The tinplate mills are understood to have accepted prac- 
tically all the contract business for 1916 they care to take 
at the ruling market, and most of the independents have 
announced an advance from $3.60 to $3.75, an advance which 
the leading interest is expected to make next week. 

There is a remarkably heavy demand for oil country 
goods, continuing the improvement that began towards the 
close of September. Heavy oil developments are expected 
for months to come on account of the failure of the Gushing 
field. 

Pig Iron — The pig-iron market continues to show extreme 
sensitiveness, prices tending to advance in the face of light 
sales. Bessemer has sold at $20, Valley, in one 1,000-ton and 
several smaller lots, establishing the market at an advance of 
50c. There are only a few sellers of foundry iron and they are 
very reserved about selling any tonnage, though a few are 
now willing to consider third-quarter deliveries, at an ad- 
vance of 50c. Basic iron is not moving to any extent and the 
real market level is not clearly disclosed, the last important 
sales being at $1S, Valley. The pig-iron market has all the 
outward semblance of extreme strength, with furnaces appar- 
ently well sold up, but no one really knows how much ca- 
pacity they have been disposed to hold back in view of the 
steadily advancing prices. We quote: Bessemer. $20 '§20.50: 
basic, $lS(glS.50: foundry, $18.50(319; malleable and forge, 
JISS 18.50, f.o.b. Valley furnaces. 95c. higher delivered Pitts- 
burgh. 

FerromanBanese — English producers who were quoting 
$100. Baltimore, on contract, have advanced to $110, the price 
quoted by one producer for two or three weeks, and domestic 
producers are quoting up to $125 on contract. Prompt lots 
generally command $110 § 115, shipping point. 

Steel — The market has continued quiet. The interest of 
consumers is in securing deliveries on contracts rather than 
in making fresh purchases. The market is quotable at about 
$32'5 33 for bessemer billets or sheet bars and about $35 for 
openhearth. fob. maker's mill, Pittsburgh or Youngstown. 
Rods are quoted nominally at about $40, but there are reports 
of fair-sized sales at $44, Pittsburgh. 

FOREIGX IRON 

Forelsn Trade of <;reat Britain In Iron and Steel. 11 

months ended Nov. 30. is valued by the Board of Trade re- 
turns as follows: 

Exports Import.*) Excess 

Iron and steel £36,909,103 W.STCISS Exp. £27.G38,96o 

Hardware, machinery, ete 26,917.0.58 13.812 477 Exp. 13,305.181 

T.,i.als £63.826,761 £23.482.015 Exp. £40„344,146 

Totals, 1914 85,674,792 22,035,453 Exp. 63,039,333 

Actual (luantities of iron and steel exported were 3,678,- 
^3I tons in 1914, and 2,944,838 tons in 1915; imported, 1,557,- 
-1.1 tons in 1914, and 1,090,400 tons this year. 

FERROALLOYS 

Ferronlllron la in demand and firm. For high-grade, SO',', 
up, the quotation is $S3@8o per ton at furnace in the Pitts- 
burgh District. Bessemer ferrosiUcon is also firm, prices vary- 
ing from $2S at furnace for 10";; up to $38 for 16',r alloy.— 
FerrotnnKiiten remains high with some variations in price. — 
Tuniciiten metal is held at $6.50 per lb. for 98";^ pure. — Molyb- 
denum metal Is reported sold at $1.50 per lb. Most of the 
metal now offered is high In sulphur, and good metal Is scarce. 

■ ROM ORK 

Sales of Lake ore continues. It Is believed that there will 
be a better demand for Lake ore from Eastern furnaces dur- 
ing the coming season, owing to the high ocean freight rates 
on foreign ore and the uncertainty of shipments. Even from 
I'uba there Is a scarcity of vessels and shipments are slow. 
The new MIdvale Steel and Ordnance Co. has already bought 
:i large block of Lake ore. 



A consular report from Chile says that the Chilean com- 
pany owning the iron-ore deposits on Gordon Island, in the 
southern part of the country, is anxious to sell the property 
or to obtain capital to exploit it. It is close to deep water 
on a good harbor and is believed to be worth investigating. 

Iniiiorts of Iron Ore in Great Britain, 11 months ended 
Nov. 30. were 5.340,348 tons in 1914, and 5,609,914 in 1915; 
increase, 169,566 tons, or 3.2<;;, this year. Imports of mangan- 
ese ore were 446,205 tons in 1914, and 338,053 tons in 1915; 
decrease, 108,152 tons. 

OTHER ORES 

-Antimony Ore is in good supply at present, some quanti- 
ties being offered from South America. The only plant in the 
East is crippled by a recent fire, so that American users 
are out of the market for the present and prices are nominal. — 
TunB.«ten Ore is a little easier, the high prices paid having 
brought out a little more supply. Prices are quoted around 
$45'ff50 per unit for ore 60% WOj, and business has been done 
at those figures. It is reported that $42 per unit has been 
taken for 1916. 

Manganese Ore — An official Russian report gives the total 
shipments of manganese ore from mines in the Caucasus 
in 1914 at 788,216 tons; a decrease of 400,384 tons from the 
previous year. 

COKE 

Coke production in the Connellsville region for the week 
is reported by the "Courier" at 451,896 short tons: shipments, 
441,211 tons. Shipments of Greensburg and Upper Connells- 
ville districts, 34,761 tons. Shipments were cut down by 
congestion on the railroads. 

Connellsville — The acute scarcity of prompt coke expected 
by some operators for Christmas time has not been realized. 
The market was quiet before Christmas and has shown no 
activity thus far this week. Furnaces are apparently provided 
with sufficient coke to tide them over such poor deliveries as 
may occur this week, and prompt furnace coke is quotable at 
$3.25<g3.50. the same as a week ago. Foundry coke for many 
points in New England is subject to a tight railroad embargo 
and some material has thus been released, making the market 
on the whole a shade easier, at about $3.50@3.75 per ton at 
ovens. 

Coal and Coke Carried on Pennsylvania R.R. lines east of 
Pittsburgh and Erie. 11 months ended Nov. 30, in short tons: 

1914 1915 Changes 

Anthracite 10.071,433 9.882,581 D. 188,849 

Bituminous 41,287,270 40,290.407 1"). 993,863 

Coke 8,877,618 10.824. .573 I 1,946,955 

Totals 60.236,321 60,997,564 I. 761,243 

The increase was wholly in coke. The total November 
tonnage was 6,721.984 tons, being 1,671,810 tons more than last 
year. 

Furl Exports of Great Britain, 11 months ended Nov. 30, 
in long tons: 

1914 1015 Changes 

Coal .-.5.:!41,00e 40.247..")20 D. 15.093,477 

Coke 1,075.406 909.134 U. 166,272 

Briquetles 1.. 534.680 1,143.245 D. 391,435 

Steamer coal 17.287.361 12.677.086 D. 4.620.278 

Total 75.238.456 .54,976.994 D. 20.271,462 

Steamer coal is fuel furnished to steamships in foreign 
trade. Imports were only 3,137 tons this year. 

Chemicals 

NEW YOKK — Dec. SB 

The general market is still steady, with a good undertone, 
though sonic temporary dullness is due to the holidays. 

Amenlc — The market is more active and firmer, and 
prices have advanced. The current quotations are $4@'$4.50 
per 100 lb. for both spot and futures. 

Copper Sulphate — The stocks for early delivery arc low 
and the market is rather confused. Prices have advanced 
rather sharply and the present quotation may be put at $11 
per 100 lb. for carload lots and $11.25 per 100 lb. for smaller 
parcels. 

Nitrate of Soda — The demand continues good for the sea- 
son, and prices are supported by the high ocean freights, 
which show no signs of weakening. Quotations are $3.25 per 
100 lb. for both spot and futures. 

Pyrltea — Imports at Baltimore for the week included 3.265 
tons Iron pyrites from Spain. 

Sulphurle Acid — Exports of sulphuric add from the United 
States, nine months eniled Sept. 30, Increased from 7,057,802 
lb. In 1914 to 63,436,045 lb. this year. 



Januarv 1, ]!)l(i 



THE ENGINEERING d- .MINING JOURNAL 



37 



Assessments 



N. Y. EXCH. Dec. 27 BOSTON EXCH Dec. 27 



Company 



Ailvorate. Utah 

Alpha. Nev 

Alta-tlprnianla. Utah 

Andes Sliver. Nev 

Argenta, Ida 

Cedar Creek. Ida 

Conrtdencc. Nev 

Demijohn Cons., Nev 

Dry Canon Cons.. Utah 

E. Hercules Ext., Ida. (post.). 

Emerald. Utah 

Federal Ely. Nev 

Four Timbers. Wash 

Octhln l.e Hoy. Utah 

(;old Mt. Champion. Utah. . 

Hancock Cons.. Mich 

Hypotheek, Ida 

Ida. & L. Angeles. Ida., (post.) 

Idaho-Nevada. Ida 

Ivanhoe. Ida. (post.) 

.lack VValtc. Ida. (post.) 

Joe Davis. Calif 

I.ehl-Tlntlc, Utah 

Lucky Calumet Cop.. Ida 

Lucky Swede. Ida 

MaJ. Evans Cons 

Monte Crlsto. Utah. 

Murray Copper, Utah 

Nevada-.^naconda. Utah 

New Baltic, Mich 

Nicholas Tlntlc, Utah 

Nyala Metals, Nev 

Old Veteran, Ida 

Oreano. Ida 

Rescue Eula. Nev 

Rio Grande Grub Stake, Utah 

Sierra Nevada. Nev 

Sixes Mlnin?. Utah 

Tarbox. Ida 

Tonopah Midway, Nev 

Victoria. Utah 

Wasatch Marble. Utah 

Western M. & M.. Utah 

Western Pan. Mln., Utah. . . . 

Western Star. Ida 

White Cloud. Utah 



Dellnqe Sale 



Dec. 
Dec. 
Jan. 
Dec. 
Dec. 
Jan. 
Dec. 
Dec. 
Dec, 
Jan. 
Jan. 
Dec. 
Dec. 
Dec. 
Dec. 



Amt. 



Jan. 


2!) 


.Ian 


IS 


Jan. 


U\ 


Jan. 


Ifi 


Feb. 


!» 


Jan. 


Id 


Jan. 


1,'j 


Jan. 


11 


Jan. 


29 


Feb. 


2 


Jan. 


2.S 


Jan. 


17 


Jan. 


■M 


Jan. 


24i 



l.-?lSO (10) 
03 
005 
0.02 
0.001 
0.01 
0.10 
005 
001 

0015 
O.OOJ 
0.005 
Q.OOI 
0.01 
0.0025 

1 00 
20l 0.005 

005 

002 

0.0025 

0.01 

0.05 

002 

0.005 

0.002 

002 

00! 

001 

0.002 

0.50 

0005 

01 

0.002 

001 

0.01 

0.006 

0.10 

0.10 

0.003 

01 

0.01 

0.06 

0015 

0.00 J 

0.001 

01 



Stock Quotations 



COLO. SPRINGS Dec. 271 SALT LAKE 



Name of Comp. 



Aracla 

Cripple Cr'k Con.. 

C. K. * N 

Doctor Jack Pot. . 

ElktoD Con 

El Paso 

Flndlay 

Gold Dollar 

Gold Sovereign. . . 

Golden Cycle 

Isnbclla 

Jack Pot. 

Jerry Johnson 

Lex.neton 

Mary McKlnney. . 

Pharmacist 

Ponland 

Raven B. H 

Vinllcrilor .. 



Name of Comp. 



Beck Tunnel 

Black Jack 

Colorado Mining.. 

Crown Point 

Daly-Jiidgc 

Emma Cop 

Gold Chain 

Grand Central. . . . 

Iron Blossom 

Lower Mammoth. 

May Day 

Opohongo 

Prince Con 

Seven Troughs . . 
Silver Klni; Coal'n. 
Silver King Con.. . 

Sioux Con 

Uncle Sam 

Yankee 



SAN FRANCISCO 


Dec. 27 


Alta . ... 
Andes 


.10 1 

.07 I 

.04 

,3f. ' 

.02 
t.04 

.25 

.19 

.02 

.03 

.14 

.01 
25 

.75 

.23 > 

.05 

.04 

.04 

.42 

.66 
t.Ol 


Belmont 

Jim Butler 


4.621 
1,00 


Caledonia 


MacNamara 


,03 
.14 




Mont. -Tonopah. . . . 

North Star 

Rescue Eula 

West End Con. .... 


.30 


C'>nndence 

Con. Virginia 

Gould & Curry — 


.14 

,os 

,75 
,21 








Julia 


Booth 

C.O.D. Con 

Comb. Frac 

D'Beld Daisy. . 
Jumbo Extension. . 
Pitts.-Sllver Peak. . 
Round Mountain., . 
Sandstorm Kendall. 

Silver Pick 

Central Eureka. . . . 


,37 

03 


Occidental 

Orhlr 


,07 
,03 








,06 


Scg Belcher 

Sierra Nevada 

Union Con 

Utah Con 


,39 
,07 
,05 
,06 





TORONTO 


Dec, 27 


Bailey 


.04i 


DomcKxten 


,37i 


Chambers Ferland. 


.3n; 


Dome Lake 


,26 


Conlagas 


4,15 


I'oley O'Brien 


,40 


La Rose 


65 


Holllnger. 


28,30 


Peterson Lake 


3S 


Imperial , , 


,04 


Rlchl ol Way 


05 


Jupiter 


.19i 


Sencra Superior, , . , 


.65 


Mclntyre 


1.07 


T, A Hudson Bay, 


23 00 


Pnrcu. Crown 


.Sfi 


Temlnkamlng.. .... 


.64i 


Prcstnn i;. D 


06) 


Trethewey 


t,16 


Vlpond 


.64 


Weiilaiifer-I.or 


CS 


West Dome 


.15! 





LONDON 


Dec, 13 


Alaska Tred« ell 


£7 23 6d 




Mexico Mines.. 


£1 OsOd 


Burma Corp., 


1 15 




Nechl. pid. . 


12 


Cam & Motor , . 


14 3 




OrovlUc. 


14 


Camp Bird 


S 




.Santa Gcrrdls 


10 6 


El Oro 


9 fi 
11 






ICsperanza, . . . 




Tough Oakes, . 


12 r. 



Name of Comp. 

Alaska Gold M. . . . 

Alaai a Juneau 

Ani..Siii.&Ref..com . 
Am. Sin. ,t Ref.. pf. 
Am. Rm. Sec., pf. A 
Am. Sni. Sec, pf. B. 

AuacouUu 

Butopllas Mln 

Bethlebem Steel. . . 
IJethlehem Steel, pf. 
Butte & Superior. . . 

Chile Cop 

Cliino 

Colo. Fuel A Iron. 
Crucible Steel 

Dome Mines 

Federal M, & S. . 
I'-ederal M. & S.. pf. 
Great Nor., ore., ctf. 
Greene Cananea. . . . 

GiiB«en. Exp 

lioniestake 

Inspiration Con.. - - 
International Nickel 
Lackawanna Steel, 
Miami Copper.. . . 
Nttfl Lead.com., . 
National Lead, pf.. 

Nev. Conaol 

Ontario Mln 

Quicksilver 

Quicksilver, pf ... 

Uuy Con 

Itepubllc I^S. com 
Republic I&S. |if.. 

Sloss-Sheffield 

Sloss-Sheffleld. pf 
"I'euuesaee Copper. 

Utah Copper 

U.S. Steel.com, , . 

U.S. Steel, pf 

Va. Iron C. & C. 



Name of Comp. 



N. Y. CURB 



Alta Con 

Am. Zinc 

Beaver Con 

Big Four 

Braden Copper.. , . 

Buffalo Mines 

Bulte & N. Y 

Butte C. & Z 

Can. Cop. Corpn. 

Cashboy 

Cerro de Pasco .... 

Con. Arlz.Sm 

Con. Coppermtnea.. 
Con. Nev .-Utah. 
Dla Black B. . . , 

Florence 

Goldfleld Con 

Goldtleld Merger., 

Hecla Mln 

Howe Sound 

Kennecott Cop 

Kerr Lake 

Magma 

Majestic 

McKlnley-Dar-Sa- 

Mloea of Am 

Mother Lode 

Nevada Hills 

New Utah Bingham 
Nlplsslng Mines.. . . 

Oro 

Ray Hercules 

St. Joseph Lead 

South Utah 

StuQd'd Oil of N.J.. 

Standard S. L 

Stewart 



Tonopah 

Tonopah Ex 

Tonopah Merger. . 

Trlbulllon 

White Knob, pf... 
Yukon Gold 



Adventure 

Ahmeek 

Algomah. 

Aliouez 

Ariz. Com., ctfB.. . 

Bonanza 

Butte Alex. Scott. 
Butte- Bal I ak lava. . 
Calumet & Ariz.. . 
Cahimet A Hecla.. 

Centennial 

Copper Range. . . . 

Daly West 

East But'e 

Franklin 

Granby 

Hancock 

Hedley 

Helvetia 

Indiana 

Island Cr'k, com.. 
Island Cr'k, pfd... 

Isle Royale 

Keweenaw 

Lake 

La Salle 

Mason Valley 

Mass 

Mayflower 

Michigan 

Mohawk 

N'ew Arcadian 

New Idrla 

North Butte 

North Lake 

OJlbway 

Old Colony 

Old Dominion. . . . 

Osceola 

Qulncy 

St. Mary's M. L.. 

Santa Fe 

Shannon 

Shattuck-Arlz 

So. Lake 

Superior 

Superior & Best. . . 

Tamarack 

Trinity 

Tuolumne 

U.S. Smelting. . . . 
V. S. Smelfg, pf. . . 

Utah Apex 

Utah Con 

Victoria 

Winona 

Wolverine 

Wyandot 



BOSTON CURB Dec. 27 



Bingham Mines.. . . 

Boston Ely 

Bntte & Lon'n Dev 

Calaveras 

Calumet-Corbln.. . . 

Chief Con 

Cortez 

Crown Reserve 

Davis-Daly 

Eagle & Blue Bell. . 

First Nat. Cop 

Houghton Copper. , 
Iron Cap Cop., pf.. , 
Mexican Metals.. . . 
Nat. Zinc & Lead . . 
Nevada-Douglas. . . 

New Baltic 

New Cornelia 

Ohio Copper 

Oneco 

Raven Copper 

Rex Cods 

Smokey Dev 

Tonopah Victor., . , 
United Verde Ext. , 
Utah Metal 



tLaat Quotations. 



Monthly Avernere Prices of Metals 

SILVER 





New York 


London 




Month 








1913 


1914 


1915 


1913 j 1914 1 1915 


January, , 


62.938 


57 572 


48, 855 


28 983 28,563 22 


731 


February, , 


61.642 


57.506 


48,477 


2S 357 26,573 22 


753 


March 


57.870 


58.067 


50,241 


26 . 669 26 . 788 23 


7U8 


April 


59 . 490 


68,51» 


50,250 


27,416,26.958 23 


709 


May 


GO. 361 


as. 175 


49,91.'; 


27 S2.'; 26.704 2:i 


,'■,70 


June 


58.99C 


56.471 


49,034 


27 199 2,'i 94S 23 


2li7 


July 


58.721 


54. 678 


47,519'J7 074 2,i .Mil 22 


5',17 


August, . . , 


159 . 293 


54,344 


47.1li3 27 Sii.'! .'5 '.I7'-I 22 


,S{) 


September 


00 . 640 


53.290 


48.680 27 9,S6 24 -'00 23 


5'il 


October , . 


00 793 ,50. 6.54 


49,3S5i2,s 0S3 23,199 23 


925 


November, 


5S 995 49 . 0S2 


51.714 27 263 22.7113 25 


094 


December . 


57 760 49 375 


26.720 22.900 . , 




Year . , . 


59 791 


54 811 




27 576 25 314 . 








.Neiv 


York 


London 


Month 


1914 


1915 


1914 


1915 




37.779 
39.830 
38.038 
36. 154 
33,360 
30,577 
31,707 

32.075 
30,284 
33.304 
33.001 


34.260 
37.415 
48.426 
47,884 
38,790 
40.288 
37.423 
34.389 
33,125 
33,080 
39,224 


171,905 
181,556 
173 619 
lt.3 963 
150,702 
138.321 
142 517 

S 

J 

t 
139,391 
147.102 






176.925 






April 


166.225 


May 


162.675 


July 

Airiiust 


167,080 
151,440 




















34 301 

















Month 



January, , . 
February. . 

March 

April 

May 

June 

July 

August, , , . 
September 
October . . . 
November. 
December 

Year 



4.111 
4.048 
3.970 
3.810 
3,900 
3,900 
3,891 
3,875 
3,828 
3,528 
3.683 
3.800 



3,827 
4,053 
4,221 
4,274 
5 932 
5,659 
4,656 
4,610 
4,600 
5,155 



1914 1915 I 1914 I 1915 



4 on 

3 937 
3,850 
3.688 



3,715 

3.6581 
3 384 1 



3.54819,665 IS.eOti 
3.71819 006il9.122 
3,99719,651i21,SS3 
18,225 21,094 
18.503i20.347 
5, .S36ll9, 411 25,170 
19 051 24,611 
t 121.946 
23.101 
23.994 
18,S0D!26.278 
19,097 



5,531 
4,520 
4.490 
4.499 
5,078 



SPELTER 



Month 


New York 


St, Louis 


London 


1914 


1915 


1914 


1915 


1914 1915 


January. , 


5,262 


0,386 


5,112 


6 211 


21 533 30.844 




5 377 


8,436 


5,22S 


8,2.55 


21 413 39,819 


March 


5 250 


S,541 


5.100 


S,36f 


21 460 44.141 


April 


5 113 


10,012 


4,963 


9,. 837 


2 1 .'it'*',' 


49.888 


May 


5 074 


14,781 


4,924 


14.01f 


2! :i'';i 


68. 100 




5 000 


21,20S 


4,850 


2 1 . 03,s 


■n .a:, 


1U0.614 


July 


4.920 


19,026(4,770 1,< S56 


21 oi,.< 


97.250 


August 


5 508 


12,78115,41,': 12,011 


J 


67.7S6 




5.380 


13,440'5,230 13 270 


t 




October,., , 


4.909 


12,800 4, 750J 12, 596 


t 


66,536 




5.112 


15,962,4,962:15-792 


25.016 


Sg.409 


December , 


5.592 




5,430 


27.369 




Year , , , 


5,213 





5,061 















New York and St, Louis quotations, cents per pound. 
London, pounds sterling per long ton, • Not reported. 
t London Exchange closed. 



PIG IRON IN PITTSBURGH 





Bessemer 


Basic 


No. 2 


Month 






Foundry 




1914 


1915 


1914 


11115 


1914 


1915 


January, , , 


$14,94 


»14..59 


$13 23 


$13,4,' 


$13 99 


$13.90 




15,06 


1 4 , ,55 


14,12 


13,45 


14 08 


13.90 


March 


15 07 


14,, 55 


13.91 


13,45 


14 10 


13.95 


April 


14,90 


1 4 , 55 


13 90 


13,45 


14 13 


13.95 


May 


14,00 


14,01 


13 90 


13, fit 


14 27 


13.83 


June 


14,90 


14,70 


I3.!HI 


13,67i 13 96 


13,77 


July 


II 911 


14.94 


13,90 


13,91 13 90 


13,68 


August, , , , 


14,90 


16.01 


13,90 


15,31 14 OS 




September 


14 W 


16,86 


13 90 


15,95 14 03 


15,70 


October.,, , 


14 81 


16.95 


13 75 


15,96 13,97 




November, 


14.59 


18.26 


l:l 43 


17. 30; 13.83 


17.20 


December . 


14,711 




13,45 


13,83 




Year 


$14 88 




SI3,78 


$14,01 





38 THE ENGIXEERIXG &" MINING JOURNAL Vol. 101, No. 1 

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f I 

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This index is a convenient reference to the current liter- 
ature of mining and metallurgy published in all of the im- 
portant periodicals of the world. We will furnish a copy of 
any article (if in print) in the original language for the 
price quoted. Where no price is quoted, the cost is unknown. 
Inasmuch as the papers must be ordered from the publishers, 
there will be some delav for the foreign papers. Remittance 
must be sent with order. Coupons are furnished at the fol- 
lowing prices: 20c. each, six for $1, 33 for $o, and 100 for Jlo. 
When remittances are made in even dollars, we will return 
the excess over an order in coupons, if so requested. 
COPPER 



t Arizona Co., Warren Mining 
(Min. and Eng. Wld., Dec. 11. 



2532 — ARIZONA — Calumet 
District, Ariz. C. A. Tupper. 
1915; 21,4 pp.. illus.) 20c. 

2533 — CALIFORNIA AND OREGON— Gold. Silver, Copper, 
Lead and Zinc in California and Oregon in 1914. Chas. G. 
Yale. (Mineral Resources of the U. S. for 1914 — Part I, Oct. 
30. 1915; 62 pp.) 

2534 — CHILE — Bosquejo del Estado Actual de la Industria 
Minera del Cobre en el Estranjero i en Chile. J. G. Malta. 
(Bol. Soc. Nac. de Mineria, July and Aug., 1915; 33 pp.) Con- 
tinuation of article previously indexed. 

2535 — CONCENTRATOR — Braden Copper Co.'s Concen- 
trator at Sewell, Chile. (Eng. and Min. Journ., Nov. 27. 1915; 
1>4 pp., illus.) From "Teniente Topics." Oct.. 1915. 20c. 

2536 — ELECTROLYTIC COPPER — The Production and 
Properties of Electrolytic Copper. B. Welbourn. (Elec. Rev., 
London, Nov. 19, 1915: 2 pp.) Abstract of chairman's address, 
to Manchester Local Section of the Assn. of Elec. Engineers, 
Nov. 16, 1915; to be continued. 40c. 

2537^FLOTATION at Globe-Miami. Ariz. (Eng. and Min 
Journ.. Dec. 18. 1915: 1% PP.) 20c. 

2538 — IDAHO AND WASHINGTON — Gold. Silver, Copper 
Lead and Zinc in Idaho and Washington in 1914. C. N. Gerry. 
(Mineral Resources of U. S.. 1914 — Part 1. Dec. 17, 1915; 58 pp.) 

2539 — JAPAN — .Xshio's Copper-Smelting Works at Honzan 
Japan. fEng. and Min. Journ., Dec. 18, 1915; 3 pp., illus.) 20c 

2540 — LEACHING — Roasting and Leaching Concentrate 
Slimes Tailings. (Bull. A. I. M. E., Dec. 1915; 4 pp.) Discus- 
sion of article by Lawrence Addicks previously indexed. 

2541 — ONTARIO — The North Shore of Lake Huron: Sum- 
marv Report on Geology and Mineral Industry. Cyril W. 
Knight. (Annual Report. Ont. Bureau of Mines. Vol. XXIV. 
Part 1, 1915: 26 pp., illus.) Information about Bruce Mines 
district is included. 

2542 — PYRITE SMELTING at Mount Lyell. Presidential 
Addres^ bv Robert C. Sticht. (Proc. Austral. Inst. M. E., 
No. 19, If'lS: 49 pp., illus.) 

2543 — .^.\NTO DOMINGO — The Copper Deposits of San Cris- 
tobal, Santo Domingo, r Bull. A. I. M. E.. Dec, 1915; 1% pp,) 
Discussion of article by T. F. Donnelly previously indexed. 40c. 

2544 — T.\SM.\NTA — Stope-Survev Practice at Mount Lyell. 
G. F. Jakins and L. J. Coulter. (Proc. Austral. Inst, of M. E., 
Nov. 19, 1915; 14^4 pp., illus.) 

2545 — VENTILATION of the Copper Queen Mines. (Bull. 
A. I. M. E., Dec, 1915; 1 •/» pp.) Discussion of article by 
Charles A, Mitke previously indexed, 

GOLD AND SILVKK — GBOLOGY 

-ARIZONA — A Reconnaissance in the Kofa Mountains, 



(Bull, 620-H. U. S. Geol. Surv.. 



2546- 
Arizona. Edward L. Jones. Jr. 
1915; 14 pp.. illus.) 

2547 — CANADA — Pre-Cambrlan Goldfields of Central Can- 
ada. J. B. Tvrrtll. (Trans. Soc of Can.. Vol. IX, Series III. 
1915: 30 pp., illus.) 

2548 — DUTCH GUIANA — Gold Deposits of Dutch Guiana. 
J. B. Percival. (Can. Min. Journ.. Dec. 1, 1915; 2 pp.) 20c 

2549 — ONTARIO — Gold Discovery Near Dryden, Ont. James 
Bartlett. (Can. Min. Journ., Dec. 1, 1915; •% p.) 20c. 

2550 — TASMANIA — The Geology of the Waihi Grand Junc- 
tion .Mine. Arthur Jarman (Bull. 134. I. M. M.. Nov. 11, 1915; 
8'/& '■■) ) Discussion on article i)rcviously indexed. 

2 — WITWATERSRAND — Conditions of Deposition of 
the • \' alcrsrand System. E. T. Mellor, (Min. Mag., Nov., 

1915; ; pp., illus.) 40c. 

fiOl-D DRKDCilNG AND PLACKR r.IIMNG 

2552 — AL.\SK.\— Hydraulic Mining at Circle. Hubert I. 
Ellle, (Eni,'. and Min. Journ., Dec 11, 1915; 1 p., illus.) 20c 

2B63 — ALASKA — Sluicing Methods at Fairbanks. Hubert 1. 
Ellis. (Eng. and Min. Journ., Dec, 18, 1915; 3% pp., Illus.) 20c. 

2554— SEWARD PENINSULA— Dredging Outlook on Sew- 
ard T'enlnwula. (Alaska and Northwest Min. Journ., Nov., 
1915; 1 p., Illus. 20c. 

GOLD .\ND SILVICR — CYANIDINR 

2555 — CO.STS — Planl-Con«tructlon C"st.s In Chosen. A. E. 
Drucker. (Min. and Scl. Pr.Hs, D.-c 11, 1915; 1 p., lllus.) 20c. 

2556 — FLOTATION CONCENTHATR- Cvanlde Tr.'atment 
of Flotation Concentrate. Charlis Hulters and J. E. Clennell. 
(Min. and Scl. Press, Nov. 20, 1915; 8 pp.) 20c. 

2557 — ONTARIO- liulldlng the Tough-Oakes Mill. John A. 
■Raker. (Eng. and Min. Journ.. Nov. 27 and Dec, 4, 1915; 9 pp.. 

IIIUB.) 



255S — OREGON — The Cyanide Plant of the Baker Mines Co., 
Cornucopia. Ore. Robert M. Keeney, (Met. and Chem, Eng., 
Dec. 15, 1915: 6 pp., illus.) 40c. 

2559 — PRECIPITATION "^'ith Zinc-Thread. Jay A. Car- 
penter. (Min. and Sci. Press, Dec. 11, 1915; 3J pp.) 20c. 

2560 — RAND — Metallurgical Practice in the Witwatersrand 
District, South Africa. (Bull. A. I. M. E., Dec, 1915: 17% pp.) 
Discussion of article by F. L. Bosqui previously indexed. 

2561 — REFINING — Electric Furnace for Gold Refining at 
the Alaska-Treadwell Cyanide Plant. (Bull. A. I. M. B., Dec, 
1915; 3 pp.) Discussion of article by W. P. Lass previously 
indexed. 

2562 — SOLUTION.? — The Morro Velho Method of Assay of 
Gold-Bearing Cyanide Solutions. Donald M. Levy and Harold 
Jones. (Bull. 134. I. M. M., Nov. 11, 1915; 1% pp.) Authors' 
reply to discussion. 

2563— THICKENERS— Foam Sweep for Thickeners. D. W. 
Minier. (Eng. and Min. Journ., Dec. 18, 1915; ?i p., illus.) 2Dc. 

2564 — WESTERN AUSTRALIA — The Metallurgy of the 
Sons of Gwalia Mine Ore. Thos. B. Stevens. (Journ. W. 
Austral. Chamber of Mines. Sept. 30, 1915; 11 pp., illus.) 

GOLD AND SILA"ER — GENERAL 

2565 — ARIZONA — Mining Developments at Oatman, Ariz. 
J. Nelson Nevius. (Min. and Oil Bull., Nov., 1915: 5 pp., illus.) 

2566 — CALIFORNIA AND OREGON — Gold. Silver, Copper, 
Lead and Zinc in California and Oregon in 1914. Charles G. 
Yale. (Mineral Resources of the U. S. for 1914 — Part I. Oct. 
30. 1915: 62 pp.) 

2567 — CHOSEN — Prospecting on the Chiksan Concession. 
Charles W. De Witt. (Min. and Sci. Press, Dec. 11, 1915; 2 pp., 
illus.) 20c. 

2568— ELECTROMETALLURGY — Neuerungen in der Elek- 
trometallurgie der Edelmetalle. Franz Peters. (Gliickauf, 
Nov. 13 and 20, 1915; 9% pp.) 80c. 

2569 — IDAHO AND ■O'ASHINGTON — Gold. Silver. Copper, 
Lead and Zinc in Idaho and Washington in 1914. C. N. Gerry. 
(Mineral Resources of U. S.. 1914 — Part 1. Dec. 17. 1915; 58 pp.) 

2570 — SAMPLING LOW-GRADE ORE on a Large Scale. 
Downie D. Muir. Jr. (Min. and Sci. Press. Nov. 13. 1915: 4% 
pp.. illus.) Relates to practice at Ebner mine. Alaska. 20c. 

2571— SUMATRA— Erz und Kohle auf Sumatra. P. Muller- 
Herrings. (Oliickauf. Oct. 9. 1915; 4 pp., illus.) Conclusion 
of article previously indexed. 40c. 

IRON ORE DEPOSITS, MINING, ETC. 

2572 — LAKE SUPERIOR — The Dean-Itasca and Penning- 
ton Mines. (Iron Tr. Rev., Dec. 9, 1915; 1% PP., illus.) 20c. 

2573— ONTARIO — The Productive Area of the Michipl- 
coten Iron Ranges. Arthur L. Parsons. (Vol. XXIV. Part 1, 
Annual Report of Ont. Bureau of Mines. 1915; 29 pp.. illus.) 

2574 — ORE DEPOSITS — The Formation and Distribution of 
Bog and Iron-Ore Deposits. (Bull. A. I. M. E.. Dec. 1915; 1 
p.) Discussion of article by C. L. Dake previously indexed. 

2575 — PRODI'CTION of Iron Ore. Pig Iron and Steel in 
1914. Ernest F. Burchard. (Mineral Resources of the U. S., 
1914 — Part 1, Dec. 9, 1915; 58 pp., illus.) 

IRON AND STEEL MET.XLLIJRGY 

2576— ALUMINA in Steel. George F. Comstock. (Met. 
and Chem. Kng., Dec. 1, 1915; 4',4 pp., illus.) 40c. 

2577 — BLAST FURNACE — Thermal Principles of the Blast 
Furnace. J. E. Johnson. Jr. (Met. and Chem. Eng.. Dec. 1 
and 15. 1915; 7% pp.. illus.) Conclusion of article pre- 
viously indexed. 80c. 

2578— BLAST-FI'RNACE GAS — Utilization of Blast-Fur- 
nace Gas. A. N. Diehl. (Iron Tr. Rev., Nov. 11, 18 and 25, 
1915; 10 pp., illus.) Paper before Am. Iron and Steel Inst. 
60c. 

2579— CALIFORNIA— The Pacific Coast Iron Situation. 
(Bull. A. I. M. R.. Dec. 1915: 6 pp.) Discussion of article by 
C. C. Jones previously indexed. 

2580— ELECTRIC FURNACE— Evolution of the Electric 
Furnace. Karl George Frank. (Iron Tr. Rev., Nov. 4. 1915; 
2 pp.) Paper before Assn. of Iron and Steel Elec. Engrs. 
20c 

25S1— ELKCTRIC-FI7RNACE STEEL in Canada. (Bull. 
Can. Min. Inst.. Nov. and Dec. 1915; 14 pp.. illus.) 

2582— ELECTRICAL PRACTICE in Steel Mills. D. M. Petty. 
(Iron Tr. Rev., Nov. 11, 1914: l'/4 pp.) Paper before Assn. of 
Iron and Steel Elec. Engrs. 20c. 

2583— ELECTROTHERMIC SMELTING of Iron Ores in 
Sweden. Alfred Stansfleld. (Can. Dept. of Mines, 1915; 6.1 
pp., Illus.) 

25S4— HEAT TREATMENT of Modern Steels. Robert U. 
Abl)t)tt. (Iron Tr. Rev., Nov. 18, 1915; 5% pp., Illus.) 20c 

2585— IRON, JIOLYBDENUM AND CARBON — The Chemical 
and Mechanical Relations of Iron, Molybdenum and Carbon 
J. O. Arnold and A. A. Read. (l':ngineerinK, Nov. 26, 1915; : 
pp., Illus.) Paper before Brit. Instn. of Mech. Engrs. 40c. 

25.<t6— NICKEL-CHROME STEEL, The Choice of. J. 11 
S. Dlcken.'ion. (Iron and Coal Tr. Rev., Nov. 12. 1915; 2 
pp.. Illus.) Abstract of paper before Instn. of Automobll' 
Engrs. 40r, 



January 1, 1916 



THE ENGINEERING <&= MINING JOURNAL 



39 



25S7 — PRODUCTION of Iron Ore, Pig Iron and Steel in 
1914. Ernest F. Burchard. (Mineral Resources of the U. S., 
1914 — Part 1, Dec. 9. 11115; :>f> pp., illus.) 

2588 — PROPERTIES — Some Suggestions Regarding the 
Determination of the Properties of .Steel. (Bull. A. I. M. E., 
Dec. 1915; 15 pp., illus.) Discussion of article by A. N. Mitin- 
sky previously indexed. 

2589 — .SLAG — Brechanlagen fijr Hochofenschlacke. A. 
Mann. (Stahl u. Eisen, Oct. 21, 1915; iy^ pp., illus.) 40c. 

2590 — WASHED METAL. Henrv D. Hibbard. (Bull. A. I. 
M. E., Dec, 1915; 10',^ pp., illus.) 40c. 

LEAD .\XD ZIXC 

2591 — ARIZONA — Gold. Silver, Copper, Lead and Zinc in 
Arizona in 1914. V. C. Heikes. (Mineral Resources of the 
U. S., 1914 — Part 1, Dec. 14, 1915; 49 pp.) 

2592 — ASSAY — The Electrolytic Assay of Lead. Ernest A. 
Lewis. (Met. Ind.. Nov., 1915; 1 p.) A rapid method of in- 
terest to the brass-mill chemist. 

2593— CALIFORNIA AND OREGON— Gold, Silver, Copper. 
Lead and Zinc in California and Oregon in 1914. Chas. G. 
Tale. (Mineral Resources of the U. S. for 1914 — Part I, Oct. 
30, 1915: 62 pp.) 

2594 — DROSSING — Bardill Dressing Apparatus. J. O. Bar- 
dill. (Eng. and Min. Journ.. Dec 11, 1915; % p.) Device for 
agitating molten lead In drossing kettles in St. Joseph lead 
refinery. 20c. 

2595— IDAHO AND WASHINGTON— Gold, Silver, Copper, 
Lead and Zinc in Idaho and Washington in 1914. C. N. Gerry. 
(Mineral Resources of U. S., 1914 — Part 1, Dec. 17, 1915; 58 
pp.) 

2596— LEAD ANALYSIS — A Colorimetric Method for the 
Determination of Copper and Iron in Pig Lead. Lead Oxides 
and Lead Carbonate. Bernard S. White. (Journ. Ind. and 
Eng. Chem., Dec, 1915; 1% pp.) 60c. 

2597 — MAGNETIC SEPARATION in Sardinia. Charles W. 
Wright. (Eng. and Min. Journ., Dee. 4, 1915; 2 pp., illus.) 
Describes use of Ullrich electromagnetic separators at Gen- 
namari-Ingurtosu mine. 20c 

259S — SMELTIN(3 — The Advantages of High-Lime Slags in 
the Smelting of Lead Ores. (Bull. A. I. M. E., Dec, 1915; 2»4 
pp.) Discussion of article by S. E. Bretherton previously in- 
dexed. 

OTHER MET.iLS 

2599 — CADMIUM — Ueber Rohmaterialbeschaffung. Technik 
und Rentaljilitat bei der Metallurgischen Cadmiumgewinnung. 
Franz Juretzka. (Metall u. Erz, June 22, 1915; 5^4 pp., illus.) 
40c. 

2600— COBALT — Electro-Plating With Cobalt. Herbert T. 
Kalmus, assisted by C. H. Harper and W. L. Savell. (Can. 
Dept. of Mines. 1915; 69 pp., illu.s.) Part III of Researches 
on Cobalt and Cobalt Alloys Conducted at Queens University, 
Kingston, Ont. 

2601 — GERMANY — Germany's Ante-War Preparations for 
Stocks of Auxiliary Metals. (Iron and Coal Tr. Rev., Nov. 26, 
1915; IS pp.) Notes on Germany's supplies of nickel, chro- 
mium, tungsten, antimony and aluminum. 40c. 

2602 — MANGANESE — Classification and Composition of 
Manganese Ores. (Iron and Coal Tr. Rev.. Nov. 12, 1915; 1 p.) 
From Records of the Geological Survey of India. 40c. 

2603— MOLYBDENITE — Notes on the Geology of the 
"MoUv" Molybdenite Mine, Lost Creek, Nelson Mining Divi- 
sion. B. C. Chas. W. Drvsdale. (Bull. Can. Jlin. Inst., Nov., 
1915; 9 pp., illus.) 

2604— MOLYBDENUM. P. E. Joseph. (Bull. 5, Ariz. State 
Bureau of Mines. 1915; 9 pp.) 

2605 — R.\DIUM — Practical Methods for the Determination 
of Radium. II — The Emanation Method. S. C. Lind. (Journ. 
Ind. and Eng. Chem., Dec, 1915; 4?i pp., illus.) 60c. 

2606 — SELENIUM — .Analysis of Commercial Selenium. H. 
D. Greenwood. (Eng. and Min. Journ., Dec. 18, 1915; V4 P) 
20c. 

2607 — TIN — Annan River Tinfleld, Cooktown District, North 
Queensland — IV. (Queensland Govt. Min. Journ., Nov. 15. 
1915: lO'i pp., illus.) Conclusion of article previously in- 
dexed. 6nc 

260,"! — TIN — Das Zinnobervorkommen von Idria in Krain 
unter Rerlicksichtigung Neuerer Aufschliisse. A. Pilz. (Gliick- 
auf, Oct. 30, Nov. 6 and 13, 1915; 17n pp., illus.) $1.20. 

2609 — TIN — The Physical Condition of Cassiterite In Cor- 
ni.«h Mill Products. J. J. Beringer. (Bull. 134, I. M. M., Nov. 
11, 1915; 6 pp.) Further contributed remarks on paper pre- 
viously indexed. 40c. 

2610— TIN AND TUNGSTEN-t— Mining in Trengganu. Henry 
Brelich. (Min. Mag.. Nov., 1915; 3V2 PP-, illus.) 40c. 

2611— TUNGSTEN — The Black Hills of South Dakota a 
Good Producer of Tungsten. Jesse Simmons. (Min. and Eng. 
Wld.. Nov. 20, 1915; § p.) 20c. 

2612— TUNGSTEN— The Reduction Test for Tungsten. M. 
L. Hartmann. (Pahasapa Quart., Dec. 1915; 3% pp.) 

2613 — V.\N.\DIUM — Some New Organic Compounds of 
■Vanadium. .A.. T. Mertes and Herman Fleck. (Journ. Ind. 
and Eng. Chem.. Dec. 1915; 2 pp.) 60c 

XOXMET.VLLIC MIXKIl.VIiS 

2614 — ALUNITE — Recent -Alunite Developments near 
Marysville and Beaver, Utah. G. F. Loughlln. (Bull. 620-K, 
U. S. Geol. Surv., 1915; 34 pp., illus.) 

2615— ASBESTOS — Crvsotile .Vsbestos. P. H. Mason. (Min. 
and Sci. Press, Nov. 20, 1915; 1% pp.. illus.) 20c. 

2616— ASBESTOS— The Testing of Asbestos Mill Fiber. 
Edward Torrey. (Bull. Can. Min. Inst., Nov., 1915; 5 pp., Illus.) 

2617— C.\N.\DA— The Utilization of Our Non-Metallic Min- 
eral Resources, Suggested by Present Conditions. Eugene 
Haanel. (Report of 6th -Ann. Meeting, Can. Commission of 
Conservation, Jan.. 1915; 17 pp.) 

2618— MAGNESITE— The Production of Mugneslte in 1914. 
Chas. G.Yale and Hovt S. Gale. (.Mineral Resources of the 
TJ. S. for year 1914— Part II, Oct. 28. 1915; 18 pp.. Illus.) 



2619 — PHOSPHATE ROCK— Report of the Committee on 
Research and Analytical .Methods, Division of F. i tilizer 
Chemists. American Chemical Societj-. New Orleans .\ pr. 2, 
1915. (Proc. Ann. Convention, Nat. Fertilizer Assn., .luiy 12, 
1915: 7 pp.) Tentative standard methods for samplin;; and 
determination of moisture, phosphoric acid and Iron and 
alumina in phosphate rock. 

2620— POTASH— American Potash (Chem. Engr., Nov.. 1915: 
4^4 pp.) Reprint of article from "The American Fertilizer." 
40c 

2621 — POTASH — American Potash. Editorial. (Min. and 
Sci. Press. Nov. 27, 1915; 1 p.) 20c. 

2622 — POTASH — Evaporation of Potash Brines. W. B. 
Hicks. (Prof. Paper 95-E. U. S. Geol. Surv., Oct. 25, 1915: 8 pp., 

illus.) 

PETROLEr.M AXD X.\TUR.\I, G.\S 

(.See also "Fuels") 

2623 — CALIFORNI.A— The Cost of Maintaining Production 
m California Oil Fields. (Bull. A. I. M. E.. Dec, 1915; 1 p.) 
Discussion of article by M. E. Lombardi previously indexed. 

2624— DAKOTA SAND— Oil, Gas and Water Contents of 
Dakota Sand In Canada and United States. (Bull. A. I. M. E.. 
Dec. 1915; 3 pp.) Discussion of article bv L. G. Huntb-v pre- 



I'iously indexed. 



40c 



2625 — DAM.VGE BY WATER — Protecting California Oil 
Fields from Damage bv Infiltrating Water. R. P. McLaugh- 
lin. (Bull. A. I. M. E., Dec, 1915; 13 Vi PP. illus.) 

2626 — FIRE HAZ.\RD — Factors Affecting Fire Hazard of 
Oil Producing and Refining Properties. A. W. Gunnison. 
(Western Eng., Dec, 1915; 2 pp.) Abstract of paper before 
Am. Petrol. Soc, Oct., 1915. 40c. 

2627 — MEXICO — The Occurrences of Petroleum in Eastern 
Mexico as Contrasted with Those in Texas and Louisiana. 
(Bull. A. I. M. E.. Dec, 1915: 2 pp.) Discussion of article by 
E. T. Dumble previously indexed. 

2628 — MEXICO — The Petroleum Industry of Mexico. P. 
Charteris A. Stewart. (Petrol. Rev.. Oct. 30 and Nov. 6. 1915: 
2% p.) Continuation of article previously Indexed. SOc. 

2629 — NATURAL GAS — Its Occurrence and Properties. 
Dorsey Hager. (Eng. and Min. Journ., Dec. 11, 1915; 3 pp.. 
illus.) 20c. 

2630 — ONTARIO — Records of Wells Drilled for Oil and Gas 
in Ontario. Cyril W. Knight. (Annual Report of Ont. Bureau 
of Mines. Vol. XXIV. Part II. 1915: 96 pp.. illus.) 

2631 — PHILIPPINE Oil Possibilities. (Petrol. Rev., Nov. 
27. 1915: 114 pp.) 40c. 

2632 — PUMPING California Crude Oil. C. P. Bowie. (Eng. 
News, Dec. 2. 1915; 3V4 PP., Illus.) 20c. 

2633 — REFINING — European Refining Methods. Leopold 
Seelenfried. (Western Eng., Dec, 1915; 2 pp.) Address before 
Am. Petrol. Soc. Oct., 1915. 40c. 

2634 — ROYALTIES — Sliding Royalties for 
Wells. (Bull. A. I. M. E.. Dec, 1915; 3 pp.) 
article by R. H. Johnson previously indexed. 

2635— RUSSIAN PETROLEUM INDUSTRY. (Petrol. Rev., 
Nov. 27, 1915; l'^ pp.) Details for nine months: to be con- 
cluded. 40c. 

2636 — USES— Petroleum and Its Uses. John D. Northrup. 
(Petrol. Rev., Nov. 20 and 27. 1915: 314 pp.) Address before 
Oil and Gas Producers' Assn. of W. Va. 

2637— VISCOSITY OF OILS in Relation to the Rate of Flow- 
Through Pipes. R. T. Glazebrook. W. F. Higglns and J. R. 
Pannell. (Petrol. Rev.. Nov. 20. 1915: 2 pp.) 

263S — WASHINGTON — The Possible Occurrence of Oil and 
Gas Fields In Washington. (Bull. A. I. M. E., Dec, 1915: 3 pp.) 
Discussion of article bv Charles E. Weaver previously indexed. 
40c. 

ECOXOMIC GEOLOGY — GEXBR.\L 

2639 — ALASK.\ — Notes on the Geology of Gravina Island. 
Alaska. Philip S. Smith. (Prof. Paper 95-H, U. S. Geol. Surv.. 
Nov. 11. 1915; 9 pp., illus.) 

2640 — AL.\SK.\ — The Broad Pass Region, Alaska. Fred H. 
Moffit. With sections on Quarternarv Deposits. Igneous Rocks 
and Glaciation. Joseph E. Pogue. (Bull. 60S. U. S. Geol. Surv.. 
1915: .SO pp.. illus.) 

2641 — ARTZON.\ — Directory of .Arizona Minerals. Chas. F. 
Willis, (Bull. 3. Ariz. State Bureau of Mines. 1915: 16 pp.) 

2642 — C.AN.\DA — Notes on the Geology and Palaeontology 
of the Lower Saskatchewan River Valley. E. M. Kindle. 
(Museum Bull. 21, Can. Dept. of Mines, Oct. 14. 1915: 25 pp.. 
Illus.) 

2643 — DIFFUSION OF SOLIDS — Preliminary Report on the 
Diffusion of Solids. C. E. Van Orstrand and P. P. Dewey. 
(Prof. Paper 95-G. U. S. Geol. Surv., Nov. 10. 1915: 14 pp.. illus.) 

2644 — GERM.AN COLONIES — The Economic Resources of 
the German Colonies. HI, West African Colonies. (Bull. Imp. 
Inst., July-Sept,. 1915; 30 pp.) Notes on climate, etc.. and 
brief mention of minerals which occur in Camaroons and 
Togoland. 

2G45 — OC.\L.\ LIMESTONE — The Age Of the Ocala Lime 
stone. Chas. Wvthe Cooke. (Prof. Paper 95-1. U. S. Geol 
Surv., Oct. 29, 19i5; 11 pp.) 

2646 — ONT.VRIO — Metallogenetic Epochs in the Pre-Cam- 
brian of Ontario. Willet G. Miller and Cyril W. Knight. 
(Report of Ont. Bureau of Mines, Vol. XXIV. Part 1. 1915; 
7 pp.. illus.) 

2647 — ONT.VRIO — The North Shore of Lake Huron: Sum- 
mary Report on Geology and Mineral Industry. Cyril X\'. 
Knight. (.Annual Report of Ont. Bureau of Mines. Vol. XXIV. 
Part 1, 1915; 26 pp., illus.) 

.■WIXING — GEXERAL 

2648 — .ACCIDENTS — Machinery Accidents on the Gold 
Mines on the Wltwatersrand. C. B. Pattrick; also discussion. 
(Journ. So. African Inst, of Engrs., Oct., 1915; 1(5% pp.) 60c. 

2649 — .ACCIDENTS- Mining -Accidents in Ontario in 1914. 
T. F. Sutherland. E. A. Collins. J. G. McMillan and James 



•40 



THE EXGIXEERING &- MIXING JOURNAL 



Vol. 101, No. T 



Bartlett. (Annual Report of Ont. Bureau of Mines, Vol. XXIV, 
Part 1. 1915: :S pp. ,illus.) 

2650 — ACCIDENTS — Monthly Statement of Coal-Mine 
Fatalities in ttie United States, Sept., 1915. Albert H. Fay. 
U. S. Bureau of Mines; 17 pp.) 20c. 

2651 — ACETYLENE — The Explosibility of Acetylene. 
George A. Burrell and G. G. Oberfell. (Tech. Paper 112, U. S. 
Bureau of Mines, 1915: 15 pp.) 

2652 — ALASKA — Transportation in Alaska. AV. R. Crane. 
(Proc. Railw-av Club of Pittsburgh, Sept. 24, 1915; 31% pp., 
illus.) 

2653 — ARIZONA. Chas. F. Willis. (Bull. 6. Ariz. State 
Bureau of Mines, 1915-16: 16 pp., illus.) Notes on industrial 
progress of the state, including mining, giving review of 1914 
developments and production. 

2654 — ARIZON.X — Mining in Arizona. Charles P. Willis. 
(Min. and Sci. Press, Nov. 13. 1915: 2 pp., illus.) 20c. 

2655 — BLASTIN(3 — Use of Cordeau-Bickford in Deep-Blast 
Firing. L. B. Reifsneider. (Eng. and Min. Journ., Dec. IS, 
1915: % p.) 2nc. 

2656 — BLASTING WITH LIQUID AIR — Die Erzeugung und 
Verwendung flussiser Luft zu Sprenszwecken. H. Diederichs. 
(Stahl u. Eisen. Nov. 11 and IS, 1915: 12 pp.. illus.) 60c. 

2657 — BOSNIA AND HERZEGOWIN.A. — Das Berg- und Hiit- 
tenwesen in Bosnien und der Herzegowina im Jahre 1914. 
(Montanistische Rundschau. Nov. 1, 1915: 3 pp.) 40c. 

265S — COLORADO — Mining in Colorado. GeorKe J. Ban- 
croft. (Min. and Sci. Press. Nov. 13. 1915: ^i p.) 20c. 

2659 — CONSERVATION of Mineral Resources. fEng. and 
Min. Journ.. Dec. 4, 1915: lu, pp.) Excerpts from address by 
H. M. Chance at dedication of Penn. State College Mines Build- 
ing. 20c. 

2660— DIAMOND DRILLING. P. B. McDonald. (Min. and 
Sci. Press. Dec. 4, 1915: 2t4 pp.. illus.) 20c. 

2661 — DRILL STEEI^ (Min. and Sci. Press, Dec. 4, 1915; 
m pp.) 20c. 

2662 — DRILL STEEL and Its Treatment. E. M. Weston. 
(Eng. and Min. Journ., Dec. IS. 1915: 2^4 pp., illus.) 20c. 

2663 — DRILL STEEL — Handling Drill Steel. P. B. McDon- 
ald. (Min. and Sci. Press. Nov. 20. 1915: ^i p.) 20c. 

2664 — HOISTING-ROPE QUESTION. The. (Eng. and Min. 
Journ. Dec. 4. 1915: 1 H pp.) Discussion on safety of hoisting 
ropes.' From Bull. 75. U. S. Bureau of Jlines. 20c. 

2665 — HUNG-4RT — Bergbau and Hiittenwesen Ungarns im 
Jahre 1913. D. A. Zsigmondy. (Gliickauf. Oct. 9, 1915: 6 pp.. 
illus.) 40c. 

2666 — INDIA — The Mineral Production of India During 
1914. H. H. Havden. (Rec, Geol. Sun', of India, Vol. XLV, 
Part 3, 1915: 51 pp.) 

2667 — ITALY — Movimiento Industrial en 1913 de las Minas, 
Canteras i Oficinas Metalurjicas de Italia. (Bol. Soc. Nac. de 
Mineria. July and Aug.. 1915: 27>4 PP-) 

266S — MINING METHOD — Notes on Shrinkage Stoping. E. 
H Dickenson and H. J. Volker. (Eng. and Min. Journ.. Nov. 
27. 1915; 2Vt pp., illus.) 20c. 

2669 — MONT.\N.^ — Mineral County. Montana. Mining Notes. 
Hubert I. Ellis. (Eng. and Min. Journ.. Nov. 27. 1915: l^i 
pp.) 20c. 

2670 — ONT.\RIO — Mines of Ontario. T. F. Sutherland. E. A. 
Collins. J. G. McMillan. James Bartlett (Report of Ont. 
Bureau of Mines. Vol. XXIV, Part 1. 1915: 77 pp.. illus.) 

2671 — ONTARIO— Statistical Review of the Mineral Tn- 
dustrv of Ontario for 1914. Thos. W. Gibson. Report of Ont. 
Bureau of Mines. (Vol. XXH'. Part 1. 1915; 65 pp., illus.) 

2672 — PROPT-CTTON of Metals and Ores in 1913 and 1914. 
J. P. Dunlnp. (Mineral Resources of the U. S., 1914— Part L 
Nov. 20. 1915: 11 pp.) 2nc. 

2673 — PUMPING at the Commonwealth Mine, Arizona. 
Edgar A. Collins. (Min. and Sci. Press, Nov. 20, 1915; 2% pp.. 
Illus.) 20c. 

2674 — QUARRTIN(3 — Electricity In Marble Quarrying — 
Vermont Marble Co. (Elec. Rev., Nov. 27, 1915; 4 pp., illus.) 
20c. 

2675— SHAFT RECOVERY — Method of Recovering a Caved- 
In Shaft in South Africa. (Eng. and Contract.. Dec. 8, 1915: 
H4 pp., illus.) Abstract of paper before So. Afr. Instn. of 
Engrs., relating to Bantjes Consolid.Tted Mines. 20c. 

2676— SHAFT SINKING in a Michigan Iron Mine. F. K. 
Mcintosh. (Min. and Eng. Wld., Dec. 11, 1915; IH pp., Illus.) 
20c. 

2677 — SOUTH AT'STRALTA — A Review of Mining Opera- 
tions in the State of South Australia During the Half-Year 
Ended June 30. 1915. Lionel C. E. Gee. (So. .\ustrallan Bu- 
reau of Mines, 1915: 59 pp., illus.) 

2R7S_STnpE ST'RVEY PRACTICE at Mount Lyell. G. F. 
Jaklns and L. J. Coulter. (Proc. Austral. Inst. M. E.. No. 19, 
19K,: 14»:4 IT.. Illus.) 

267<>— TASMANIA— Mining Methods at Mount Lyell. R. M. 
Murray. (Proc, Austral. Inst. M. E., No, 19, 1915; 15 pp., 
illus.) 

2680 — TIMBERING In New York Subway, John Seward, 
(Eng. and Min. Journ.. Dec. 27, 1915; % p.) Replies to dls- 
cuHslon of .1 communication previously Indexed. 2flc. 

26S] — TUNNKI. — Method Used In Driving the Rogers Pass 
Tunnel. (Eng. nnd Min. Journ., Dec. 11, 1915; 1 p.) From 
Eng. News, Nov. 11, 1915. 

2«R2— WASH AND CHANGE HOT'SES for Miners, Joseph 
H. White, (Tech, Paper 116, V. 8. Bureau of Mines, 1915: 27 
pp.. Illus.) 

ORK nKF.>i<<iN(i — <:km-:k,\i, 

2«83— FLOTATION— Note,-! on Flotation. J. M. Callow. 
(Bull. A. I. M. E.. Dec 1915; IS pp., illus.) Abstracted In Eng. 
and Min. Journ., Dec. 4, 1915. 

26S4 — FLOTATION of Silver-Lead Mineral at a New South 
Wales Mine. H. Hardy Smith. (Eng. and Min. Journ., Dec. 11, 
1915: 4V4 pp.. Illus ) Describes Sliver Peak mill. 20c. 



FUELS 



26S5 — FLOTATION — The Electrical Theory of Flotation. 
Thomas M. Bains, Jr. (Min. and Sci, Press, Nov. 27, and Dec. 
11, 1915; 4I4 pp.) 40c. 

26S6 — FLOTATION PLANT of the Utah Leasing Co. Her- 
bert Salinger. (Salt Lake Min. Rev., Nov. 15, 1915; 1% pp., 
illus.) 20c. 

26S7 — MILL CONSTRUCTION — Cost of Winter Construc- 
tion. Harrv T. Curran. (Eng. and Min. Journ.. Nov. 27, 1915; 
% p.) 20c 

METAXLURGY GEXERAX 

26SS — ACCIDENTS — Accidents at Metallurgical Works ff 
the United States During 1913 and 1914. Albert H. Fa. 
(U. S. Bureau of Mines, 1915; 28 pp.) 20c. 

26S9 — FERROMAGNETIC METALS — Magnetic Studies of 
Mechanical Deformation in Certain Ferromagnetic Metals and 
Allovs. H. Hanemann and Paul D. Merica. (Bull. A. I. M. E., 
Dec, 1915: 15 pp.. illus.) 

2690 — FIRE BRICK — A New Industrial Enterprise for Utah 
and the West. Will C. Higgins. (Salt Lake Min. Rev., Nov. 
30, 1915: 2 ',4 pp.. illus.) 20c. 

2691 — INSUL.\TION — The Thermal Insulation of High Tem- 
perature Equipment. (Bull. A. I. M. E., Dec, 1915: 6 pp.. illus.) 
Discussion of article by P. A. Boeck previously indexed. 

2692 — METASTABILITY of Metals. A. Vosmaer. (Met. 
and Chem. Eng., Dec. 15, 1915: 1'^ pp.) Continuation of an 
article previously indexed; an account of publications of Prof. 
E. Cohen of Amsterdam. 40c. 

2693 — POWER — Electrometallurgical Industries as Pos- 
sible Consumers of Electric Power. (Bull. A. I. M. E., Dec. 
1915; 5% pp.) Discussion of article by D. A. Lyon previously 
indexed. 

2694 — SMOKE — Effect of Sulphur Dioxide on Human Be- 
ings. (Eng. and Min. Journ., Nov. 27, 1915: IH pp.) From 
Report of Selby Smelter Commission, Bull. 98, U. S. Bureau of 
Mines. 20c. 

2695 — SMOKE — Solution of Smoke, Fume and Dust Prob- 
lems bv Electrical Precipitation. Linn Bradley. (Met. and 
Chem. Eng.. Dec. 1, 1915: 4 pp.) Address before First Nat. 
Exposition of Chem. Industsries. 40c. 

26#6 — TEMPERATURE SCALES — Conversion Scale for 
Centigrade and Fahrenheit Temperatures. (Bull. A. I. M. E., 
Dec, 1915; 1 p.) Discussion of article by H. P. Tiemann pre- 
viously indexed. 



)n the Use of Low- 
(Tech. Paper 123. U. 



2697 — LOW-GR.\DE FUEL — Notes 
Grade Fuel in Europe. R. H. Fernald. 
S. Bureau of Mines, 1915; 37 pp., illus.) 

269S — PETROLEUM as Fuel Under Boilers and in Fur- 
naces. (Bull. A. I. M. E., Dec. 1915; 3 pp.) Discussion of ar- 
ticle by W. N. Best, previously indexed. 40c. 

2699 — POWDERED COAL — Stand der Kohlenstaubfeue- 
rungen in Deutschland. A. B. Helbig. (Stahl u. Eisen, Nov. 
18, 1915; 2li pp., illus.) 40c. 

MIMXG A\D MET.\LLLRGICA1. MACHINERY 

2700 — BELTING — How Your Leather Belting is Made. F. 
H. Small. (Iron Tr. Rev., Dec. 16, 1915: 3',fe pp.) Paper pre- 
sented before Providence Assn. of Mech. Engrs. 20c. 

2701 — CRANES — Handling Materials in Manufacturing 
Plants. Robert L. Streeter. (Eng. Mag., Dec, 1915; 27 pp., 
illus.) Second article of series dealing with overhead cranes, 
wall cranes and jib cranes. 40c 

2702 — CRANES — The Use of Locomotive Cranes and Some 
Data on Their Cost of Operation. (Eng. and Contract., Nov, 
24. 1915; I3 pp.) Prepared by committee of Am. Ry. Bridge 
and Building Assn. 20c 

2703 — G.\S PRODUCERS — Bv-Product Coal Gas Producers. 
Arthur H. Lvmn. (Iron Tr. Rev., Dec. 9, 1915; 81 pp,. illus.) 
Paper before A. S. M. E., Dec, 1915. 20c. 

2704 — LUBRICATION — The Theorv of Lubrication, Pari 
III. L. Ubbelohde. Translated by Helen R. Hosmer. (Gen. 
Elec. Rev., Dec, 1915; ZV^ pp.. illus.) Conclusion of series of 
articles — treats of "Investigations of the Future" and de- 
scribes combined oil and graphite lubrication. 40c. 

2705— PUMP — Genesis of the Centrifugal Pump. Albert 
E. Guy. (Proc. Colo. Sci. Soc, Nov., 1915; 53 pp., illus.) 

2706 — WKLDINC3 — Oxvacetvlene Welding at Braden. Alma 
Ek and J. R. Thill, (Erig. and Min. Journ., Dec 4. 1915; 2'*: 
pp.. illus.) 20c. 

SAMPLI.NO A.\D .\SS.\YIN<; 

2707— ALI'MINUM AND BERYLLIUM— The Separation : ' 
Estimation of Aluminum and Beryllium by the Use of Ac- 
Chloride In Acetone. H. D. Mining. (Am. Journ. of Sci., -N 
1915: 3 pp.) 40c. 

2708— ALI'MINUM S.^LTS — Rapid Volumetric Procedi: 
for Determining Combined Alumina and Basic Alumln:i 
Free Acid in Aluminum Salts. Wilfred W. Scott. (Journ. I 
and Eng. Chem,. Dec. 1915; 2^4 pp.) 60c. 

2709 — COAL ANALYSIS — Determination of Nitrogen 
Coal. A Comparison of Various Modifications of the KJeM 
Method with the Dumas Method. Arno C. Fieldner and Cai . 
Tavlor. (Tech. Paper 64, U, S. Bureau of Mines. 1915; 25 ; 
Illus.) 20c. 

M,\TERI..VL.S OF CONSTRIICTION 

27in—CEMENT— Southwestern Portland Cement Co. L. 
Gilbert. (Min. and Oil Bull., Oct., 1915; 6% PP.. illus.) 20c. 

2711 — CONCRETE — The Use of Hydrated Lime in Concrete 
for Waterproofing. L. N. Whitcraft. (Western Eng.. Dec, 
1915; 1 p.) 40c. 

2712— PORTLAND CEMENT — British Portland Cement- 
Making Machinery. (Engineer, Aug. 27. Sept. 3. and 10. 1915; 
4 pp.. Illus.) Conclusion of article previously indexed. 

2713— PORTLAND CEMENT CLINKER— On the Function 
of Ferric Oxide In the Formation of Portland Cement Clinker. 
Edward D, Campbell, (Journ. Ind. and Eng. Chem., Oct., 1915; 
2% pp., Illus.) 60c. 



(fhginperijig 



Minin^JoiM 






Ix 



^^ iHjiii i/ 



VOl.lJMK 1)1 



JAXUARY 8, !916 



NUMBEH .' 



This is the annual re\ iew mmiher oL' the year in which 
the J'Jnf/ineerwf/ and Mining Journal celebrates its oOth 
aiiiiiversarv. A <-()niparison of this issue, lioth in size 
and ill rharaeter, with No. 1 of Vol. 1 shows picturesquely 
llir marvelous (levelopnient of the miuing inihistry (if 
the United States, which we have chrouicled, reviewed 
and reflected without interruption during 50 years. 



TIk' jiroduction of the more imjiortant minerals and 
metals is summarized in the table on this jiavre. The de- 
tails appear nn subsequent pages. It will be found that 
in some ca>es ciur contributors give figures that do not 
agree with our owii. The explanation of such differences 
will generally be tliat the articles of outside contrilnitors 
were necessarily written and put into tj'pe before our own 
statistics were available. The necessity of handling the 

PKODUCTION OF METALS IN THE UNITED STATES 
.Metal Unit 1913 1914 1915 

.\lumuium Pmnds 49.601,500 (A) 45,000,000 (A) 80,000,000 

Copper (a) Pimnds 1.235,735,S34 1,1.58,581,876 1,424,640,565 

Ferromangnnese Lonji tons 229,834 185,118 232,210 

Gold (6) Dollars 88,884,400 94,531,800 98,891,100 

Iron Long tons 30,7.36,477 23,147.226 29,738,981 

Lead (c) Short tons 433.476 .538,735 .505,.J5(i 

.\ickel (e) Pounds 47,124,330 30,067,064 38.9611, 13S 

Quicksilver Flasks (A) 20,000 16,,300 (/) 20,681 

Silver (t) Trov ounces 6fi,S01..-)00 72,45.5,100 67,485,600 

Zinc on Short tons 3.\S,262 362,361 492,495 

(■i) Production from ore oriuii.atiiie in tlw United States. C,i T'l- ^intwlics 
for 1913 and 1914 are tlie tiiiMl :iiul ilm-i^ t, i- 1915 .are the pr.-lii i. ,i. . i-ii.s 
reported jointly by the dirc.tni. ,,l ih, Xhiit and the U. S. ( . - . n 

Ir) Production of refined 1'-:mI li.^jn .,ir :(n.l -rmp ori^inntinp in n, i , u i - >: 

antinioniallcTi.l w in.-lii.i.-.l i./i'h.i J I, ,,.,„,„ ,,f «,„h|,,,,.. ,,,,,|, ;. ;,,. 

iiiE dross and iiinl, . - -Im^- - i- , h,. i,r I - i . h - i .l.'l i\ -. I t, ■,,,., n I 

Imports; for I :* I ■ ■ ■ ■ '- .■■!,-..' I I - : i ,' i ■ i..!ii;i . I r : :, ■ I ■ r. .1 m 'in-s 

for tht' prOlhii-i 1 in: ; ,i l, .: x;. ;. ,;,il~,i,: i;; \ i. j.i.M, I ; 1... i ,^ t ,1 ,,|, - ii-al 

Survey. (,;) A^ ir|..,iiu,! I,;, tU- .M, i;.llt. ,., i:,., L.ili, liaukluii an, .M,,u.. t/.| 
Estim.ated. 

PllODUCTION OF MINERAL AND CHEMICAL SUBSTAXCES 

.Substance Unit 1913 1914 1915 

Coal, anth. (a).. Short tons 91,62i;,S25 (6)90,821,507 89,0:'0,C0O 

C:oal, bitu. (o) . . Short tons 478,r,,ss,sii7 (M 122,703,9711 428,371,921 

Coke (n) Short tons 45,9."i:!„S0S (6)34.555,914 4il.462.027 

Copper sulphate. Pounds .>l,33O.(K)0 31,776,670 41,032.0110 

Ironore Lnng tons 61,847,116 42,9n.,S97 58,843, sm 

Petroleuni Barrels (//)24S.446,230 (6)265,762,535 (6)267,400,0(10 

(n) The coal and coke statistics are I he est iinates of "Coal Age." (6) .As reported 
by U. S. ecological Suri-ey. 

great mass of material in this huge number in a few days 
leaves no time for leisurely cuiiiiiarismi and revision to of- 
i'ect a careful cocirdinatimi of all the data. We feel sure 
that no one, in the liglit of this ex])lanation, will be mis- 
led by any discrepancies that may be discovered. 

Til 11114 we were ali1c to gi\f at this time ligures ol' 
the world's produclion ol' copper, gold, s])eltcr and tin 
in the year that had closed a few days previously. These 
lignres were not mere guesses, but were based on ollicial 
i-eports covering 10 or 11 months of tlic year; with esti- 
mates only I'or November and December. When the final 
ligures were published scMTal nioiillis later, they were 
lound to vary I'imiu our jircliminary figures liy oiilv a 
trifling percentage. The statistics tluit we -aiv able to 
present this year, as w;is also the case a year ago. are I'ar 
more incomplete than in Kill ami pre\ious years, llni- 
reflecting the disturbaiii-es creaicil b\- the war. which has 
pill many commercial <iinililiou< out oj' joint. 



American mining companies that publicly announce 
their dividends paid ii>(.5,:!8:5,;]87 in 1915, compared with 
$60,323,52!) in J 91k Canadian and Mexican companies 
paid $10,686,384 in 1915 and $15,231,122 in 1011. 
United States metallurgical and holding companies con- 
nected with the mining industry paid $82,592,19-1: in 
1915, as compared with $90,434,67 7 in 1914. 

The production of spelter in the United States in 
1015 was the largest on record. The out[>ut swelled 
enormously, quarter by quarter. If the December output 
could have been reported separately, it would have ap- 
peared that the rate of production at the end of 1915 
was considerably in e.xcess of the rate of the last quarter. 
The returns from the producers showed that the increase 
of production in 1915 was chiefly attributable to the 
older smelters (many of whom added new furnaces) and 
to concerns which repaired and restored to operation 
previously idle plants. The new plants, such as those 
at Kusa and Donora, contributed relatively little to the 
output of 1915, but by the end of the year they were 
going at ]n'etty good gait, while several other new plants 
Avere about ready to come in. 

We commend to our readers a careful reading of the 
remarkable series of reviews of technical progress that 
appears in this issue. ^Ir. Knopf writes of advances in 
the science of economic geology, Jfr. ^fegraw of gold and 
silver metallurgy and progress in flotation, Professor 
Ilofman of the metallurgy of lead, Mr. Addicks of the 
metallurgy of copper. Dr. T?icketts on the mining and 
metallurgy of copper, Jlr. Ingalls of the metallurgy of 
zinc, and ^Ir. Cranston of gold dredging. All of these 
contributors are of national reputation as experts in 
their specialties; several of them are of international reji- 
iitation. Such contributions as they offer in this issue 
are real enrichments of technical literature and are es- 
])ecially valuable to the general practitioner as expert 
summaries of what has been done in technical metallurgy. 

To all the contributors who collaborated in this number 
we tender our thanks, and also to the many jiersons who 
have assisted in the collection of statistical inftu-matioii. 
Our thanks are due also to the ])rodiicers of copper, U>ad, 
spelter and other substances, who have comniunicated ti> 
us the amount of their out]iut in 1915 and have thenliy 
enabled a close approximation to the actual i>roduction in 
1915 to be made by Jan. 5. 19 Id, our date of tfoino- to 



United States jiig-irou ]iroduction is estimated at 
29.9ri.19I tons I'or the year, rro.ludion for the last 
luiif-year is estimated at IT.T^i^.lOO tons. 

Cold iiroduction of the world is esiimat.-d at $U0.- 
9;9.S90 bir !iM5, as against $i51.582.129 in 1911. 



42 



THE EXGIXEEEING o~ MINIXG JOURNAL 



Vol. 101, No. 2 



Metal Markets 



NEW YORK — Jan. .">, 1»I6 

All of the principal raetals advanced sharply in price 
during the last week, with the exception of spelter, which 
was a little softer in tone. 

Copper, Tin Lead and Zinc 

Copper — During the last two days of December some Con- 
necticut manufacturers were large buyers at 22Vic., r. t.. 
April delivery. Sales of copper for earlier delivery were 
made at 22i(;C. On Jan. 3 the market rose to 221/2 @23c., r. t., 
according to delivery, the difference between the prices for 
early and late deliveries becoming more pronounced. On Jan. 
4 the market rose further to l3®23%c., r. t., numerous sales 
of round lots being made at those figures. Certain large 
producers were able to sell freely only for second-quarter de- 
livery. Such first-quarter supplies as were free were fur- 
nished to regular customers at the same price. However, a 
buyer who wanted two million pounds had to be satisfied 
with one million. Sales in France were made at 24c.. delivered 
there, which was reckoned equivalent to about 22.80@22.90c. 
here. In London the price rose to £112®114. The aggre- 
gate of the business transacted in this market was large, 
chiefly for second-quarter delivery. The freight congestion 
on the New Haven Ry. is causing a great deal of trouble 
among the copper manufacturers of the Naugatuck Valley, 
who are short of supplies, generally speaking. 

Copper Sheets have been advanced and the base price is 
now 29c. per lb. for hot rolled and 30c. for cold rolled. Cop- 
per wire is 24® 2414c. per lb. carload lots at mill. 

Tin — Owing to the disturbance of traffic conditions in 
the Mediterranean, and the consequent scare respecting sup- 
plies, there was a sharp advance in this market, especially 
on Jan. 3, when business was done at 41 nc. at the beginning 
of the day, and at 43c. at the close, the average price for the 
day being reckoned at 42i,4c. On Jan. 4 there was a further 
advance, 45c. being the high point. A large business was 
transacted during the week. 

Lead — The A. S. & R. Co. advanced its price to 5.50c. 
on Dec. 31, and to d.Tdc. on Jan. 4. A large business appears 
to have been done. Certain important producers are so well 
sold out that they can no longer figure prominently in the 
market. 

Of the lead shipped by the Broken Hill Proprietary Co. 
in the first half of 1915, a total of 18,962 tons, 22.9% was de- 
livered in Australia and New Ztaland; 63.6',; in China, Japan 
and India; 7.7% to Vladivostok, Siberia and 5.8% to Europe. 
The deliveries to Vladivostok are a new feature. 

Spelter — Business in this metal was relatively small in 
volume, and was liBhter in the second half of the week than 
in the first. There is an easier tone. Metal for prompt de- 
livery is offered at ITc; for February, at 16'S16V2C.; for March, 
at 15%@15?4c. First-quarter delivery is quoted at 16c. For 
second-quarter delivery, many producers are sellers at 14c., 
but buyers are not to be found. 

Zinc SheetH have been advanced slightly and the base 
price is now 23c. per lb., f.o.lr. p. ru, ill., less 8% discount. 
Business is active. 

Other Metals 

.VKW VUKK — Jnii. .'> 

Alnmluum — With a fair amount of business the market 
still shows an easier tLndenc.v. Quotations are 54i&5Sc. per 
lb. for Xo. 1 ingots. New York. 

Anllmoiir — The market has been limited by the small 
amount ofTered, but has been active and closes strong. Ordi- 
nary brands, chiefly Chinese, are quoted at 42®42%c, per lb. 
The small stock of Cookson's available is held at 56c, per lb.. 
New York. 

Nickel — The market is steady and unchanged at 4B®'60c. 
per lb. for ordinary forms, according to size and terms of 
order. Electrolytic nickel is 5c. per Jb. higher. 

QuIekMilvrr — Prices seem to have gone wild in the absence 
of uijw supplies, which have been very scarce. In New York 
$1C0 ptr flask of 75 lb. Is named for large lots; *16B'S175 per 
flask for smaller orders. San Francisco price is JI35®I4B, 
with small stocks. London price Is £18 ISs. per flask, with 
no discount from Hcrond hands. 

Gold, Silver and Platinum 

tiold coinage by the L'nited Slates Mini In 1915 was espc-- 
clally large. Out of a total coinage for the calendar year 
amounting to $30,144,319.20, a total of $23,967,375 was gold. 
This Included l,5i>0 octagonal |fiO, .1,500 round $58, 10,600 



quarter eagles, and 25,000 gold dollars, coined tor the Pan- 
ama-Pacific Exposition, 719,550 double eagles, 410.075 eagles, 
752,075 half eagles, and 606.100 quarter eagles. During the 
year the mints coined 60.000 special silver half dollars for the 
Panama-Pacific Exposition, and 2,912.850 half dollars, 7,878, 45o 
quarter dollars. 6,580,450 dimes, 30,062,120 five-cent and 55.- 
975,570 one-cent pieces. 

Gold sales from the United States Assay office in N. . 
York in December were $3,230,572. For the year ended D. 
31 the total sales were $60,616,224 in 1914. and $34, 802. r,. 
in 1915; a decrease of $25,813,555 last year. 

Platinum — The situation is unchanged. Prices for th 
little thai is to be had are nominal at $90@95 per oz. l' 
refined platinum. 

Silver — The holiday inactivity in silver has been succeeded 
by an inquiry sufficiently large to carry up the price to 
26%d. in London today at which figure there is a moderate 
inquiry. 

Italian Exports of metals and minerals, nine months ended 
.Sept. 30, are reported as below, in metric tons: 

1913 1914 1915 

Quicksilver 747 635 72s 

Graphite 6,2{>! 6.118 5,610 

Sulphur 283.283 229,911 241,47S 

DAILY PRICES OF METALS IN NEW YORK 










Copper 


Tin 


Load 


Zinc 






jd 


■gd 


J=' 






if 


u'a 


n 


.8. 


^•l 


OB. 


J^ 


Dec 

Jan. 


la 


Is 

"£■0 


HO 


m6 


la 


do 


So 








22.00 




5.40 


5 325 


15.25 


:«) 


4.7394 


54J 


@22 25 
22 25 


40} 


@5 45 


@S.375 


©16.75 
15.25 


31 
1 


4.7363 


55 


@ 22.50 
22 25 


41 


5 50 


5.42} 
5.42} 


©16.75 
15.50 


3 


4.7338 


555 


@22 75 
22 75 


42i 


5.50 


e>5.45 


©16. 50 
15.50 


4 


4 7413 


561 


@23 25 
22.75 


443 


5.75 


5.67} 
5.67} 


©16.50 
15.50 


5 


4.7525 


56} 


@23.25 


445 


5.75 


@5.70 


©16.50 





Sil- 
ver 

28 A 


Copper 


Tin 


Ix- 


id 


Zinc 


d 


Standard 


Electrolytic 


Spot 


3 Mos. 


£pnr 
Ton 


Ct.-. 


£per 
Ton 




>7 
Q 


Spot 


3 M09. 


£ per 
Ton 


Cts. 


1,1 


30 


86! 


86) 


108 


22.75 


168 


169 


30} 


6.37 


00 


IK ' 


31 
I 


26} 


80) 


80} 


108 


22. 7S 


168 


169 
172 


30} 

301 


6 35 

6 30 


90 
90 


IS ' 


3 


20 H 


80] 


861 


110 


23.18 


171 


Ifi " 


4 


261 


87i 


87} 


til 


23.39 


174 


175 


31 


6.53 


90 


IS 


S 


201 


88J 


88 


112 


23.77 


17:n 


174 J 


31! 


6.58 


88 


IS • 



Thp above iaU\v tt'ivt-.a llio rinmiic quolaiinna on London Metal Exchiua 
All pricrH un- in pnuiicls strrlinK r»«T ton of 2210 Ih., pxcept silver which is in p«iM 
(XT troy nunr*- of nt> rlinji (tilvi-r. 0.1>2.'> fino. CxpiK-r quotfttiona nr-* fur »tand:u 
cup|KT, ttpot unti thrct months, nnd fur plprtroI;/tip, pnco for the latt<r bi*it. 
•jiinji'cl to 3 per cent, tlinrount. T* or convenience in comparison of London prirtr 
in pounds eU-rlinK p'^r 2240 lb., with Amfrican priwa in centa per pound the follow 
inv approximate ra(iuH arr Riven, reckoning exehaniie at 4.80. £ 16 = 3.21c 
£20 - 4.29r.; £30 - 0.13c.: £40 - 8.57c.-, £60 - 12.86q. VariationF, £1 " 
0.21 |c. 



The quotations herein are our appraisal of the averatre markets for copper. lead, 
spelter and tin baseit on wlioI?sale contracUs for the ordinary deliveries of tlie trade 
as made by prodiieera and agencies; and represent, to the best of our judgment. 
the prevaiiinp values of the metals, reduced to basis of New York, cash, except 
where St. Louis is given as the basing point. St. Louis and New York are normally 
quoted 0.17c. apart. 

The quotations for electrolytic copper are for cakes, ingots and wirebars 
Electrol>'tic copper is commonly sold at prices including deliverj" to the consumers 
and is subject to discounts, etc. The price quoted for copper on "regular terms" 
is the gross price including freight to the buyer's works and is subject to a discount 
for cash. The difference between the price delivered and the New York cash 
equivalent is at present about 0.25c. on doincstic business. The price of electro- 
lytic cathodc^ is 0.05 to 0.10c. helow that of electrolytic. Quotations for lead 
represent wholesale transactions in the open market for good ordinar>- brands 
Quotations for spelter are for ordinary Prime Western brands. Only the St. Louis 
price is herein fjuotcd. St. Louis being the basing market. We cjuote the New York 
price at 17c. per 100 lb. above the St. Louis price. 

Silver quotations are in cents per troy ounce of fine silver. 

Some current freight rates on metals per 100 lb. are: St. Louis-New York 
17c.; St. Louis-Chicago, 6.3c.; St. Louis-Pittsburgh. 13.1c. 



Januiirv », i!)lii 



TTIK K\(,IXKKI;IX(; ^- MIMNC .lOll.'XAL 



43 



GoM s^midl Salver 



J5v FiiEDi;iiKK lloiiAin' 



Tlie sold production of the world in li)1."), iifcording 
to tiir ])r('liminiiry cstinialcs pri'st'nted in Table 1. showed 
an increase 1'or the lirst time in tliree years. Tliese 
estimates are larjjely i)ased \\\Hm official returns covering 
II months, and in the instances where these are lacking, 
they are founded on the closest olficial figures obtainable, 
backed bv information Irom engineers familiar with the 
,-onditions in the several loiiiiTries. They are (dnserva- 
tively made, and it is belie\cd that the fnial corrected 
ligui'es will show s(jnie increase over thosi' hei-e given. 
That the gold-mining incUistry should make so excellent 



TABLE 1 GOLD PRODICTIOX OK TIIK WORL:) 



Tr;iiisva,ll.... 

Kh'fiipsia 

West .\f rica . . 

MrulaKasiur, ( 

Tolal .\frio! 
riiilfU SUiU'S 



Total North .\mer: 
Itus^ia, inc.. Siberia. . 

Franrc 

( )l Ikt Kumpf- 



'I'otal lOvimpi- 

HrKish India 

Briliali and Dutch 10. Indies 

Japan and Chosen 

China and others 

Total Asia, not inc. Sibori; 

.'^outh .^tnerica 

Australasia 



191.3 

$1S1,SS'.M)I2 
i:i.M:j."..(;si 



S21W,71. '1.(1.53 

sss.ss 1.1011 



HI 



id.'.iiil 
$a)..5( 10,000 

1.S12.1UU 
2.1).-)ll,00l) 

$:i4,262.100 

S12, 176,783 

■1,739,100 

7,301,300 

3,(;.'JS,900 

S27 ,909,083 
S13,0.">8,400 
;>S,033,391 



ini4 

S173,17t),13.J 
17,74.5,980 
8,071,371 
1,980,000 

$201,.573.4.S4 
S«4,.'i31.SOO 



l?l:i_Mll,MI 

$2(i,7li3,00(] 

1 ,4.J0,00() 

2.3."jO,000 

$30,5l>i,0OO 

$12,327,980 

4.090,000 

7,47Ci,.500 

3,02.5,000 

$28,119,480 
$13,.52.5,000 
45,659,271 



191.5 
S1SS,397,707 



$217,(171, .392 
•IS,S0 1,000 

ir,;.i7."..()i)U 



*i.;7.i'.ii,loo 


211.7.50,000 
1,(]25,000 
1 ,S75.1)00 






$29,0.50,000 

11,G99,.385 

t,.S25,000 

7,850,000 

3,1175,000 

828,049,385 
13,7.50,000 
44,308,013 



Total for the world S4U2,009,538 S451,.582,129 3470,979,890 

a showing in ISilf) is not so remarkable when we con- 
sider that the European War has not directly affected 
aiiv (>r the great gold-mining areas of the world. Even 
ill Ku.ssia, which is one of the countries engaged in war, 
the gold-producing districts are mainly in the Urals and 
in .Siiieria, which arc far from the .<cene of conflict. 

The total gold production of the world, according to 
these ligures, was $ irO.HI't.SDO. which is an increase of 
.$l!t,:}97,r61 over that of i:ill and of .$8,:510,;',:',2 over 
l!li:>. Tn the second table is shown the gold jiroduction 
of the world for 20 ycais past, the figures for the years 
prior to ]'Jf5 being the corrected reports of jiroduction. 

TABI.K 2. GOLD PRODUCTION OF THE WORLD It)R 20 YE.\RS 







1900 

1907 

1908 


$405,551,022 




237,833,984 


41I,294,4.5,S 


1S98 


287,327,833 


443,434, .527 


1.S99 


311, .505,9 17 


1909 


4.59,927.482 


1900 


2.58,829,703 


1910 

1911 


. 4.51,213,(>49 


1901 


2B0„S77,429 


l.V,l.:!77,300 


1902 


298,812,493 


1912 


17 1, ;.;.i,2(is 


1903 


329,475,401 


1913 




I9IM 


349,0h.-1.293 


1914. . . 




1905 


37,8,411,0.54 


1915 


(711,979, S70 



The gain in Ulin was due chietly to the two leading pro- 
ihicer,s, the Transvaal and tlic I'liiled States, the birmcr 
showing an increase over I'.M I of $ 1 ."),•.' ".M ..m I, while tlie 
I'liiled States had a larger |iroduttioii by $ l.:!:)'.l.:'.(l(l. 
In the Transvaal the increase is e.\iilaiiied by the closer 
working and the extension of operations, while in the 
United States the gain was well distributed (i\cr the 
\arioiis states and resulted cliietly from iiniiro\ciiicm> in 
metallurgy and in methods of operation. 

The four leHders among the gold-producing countries 
retaiiu^d their resiioctive rank and were, as for a number 
>.f years past, the Transvaal, the United States, Austral- 



asia and Hussia. The Transvaal produced about 40^ 
of the world's total and the United States about 1]%, 
a little over !)% coining from Australasia and about (i'/f 
from Uussia, so that these four countries furnished about 
three-quarters of the world's supply. The output of 
.Australasia was somewhat less than in 1914, although 
the decrease wa.s smaller than for several years past, 
amounting tmly to *;{,3i)l,258 against over $7,000,000 
ill li)14, as compared with the previous year. >rost of 
the other ecmntries do not show any material change. 

Africa continues to he the chief source of the world's 
supply, the mines of that continent furnishing about Aii'/c 
of the total. North America is second in rank, with about 
289,'. In Africa, especially in the Transvaal, there seems 
to be a jiractical contradiction of the pessisniistic proplie- 

TABLE 3. (JOLD AND .SILVER Ol-TPUT OF THE UNITED STATICS* 
(Gold in Values; Silver in Fine Ounces) 

Gold: Value Silver: FineOz. 

1914 1915 1914 1915 

$12,300 
16,547.200 10,026,700 8(15.900 

t,. 568,900 

21,251,900 

19,902.400 

1I1.,SOO 

1,1X7,200 



Alabama , 
Alaska... 
Arizona . . 
California 
Colorado . 
Georgiil. 
Idaho. . . . 
Illinois. . - 
Maryland 
Michigan, 



New Mexico 

North Carolina 

Oklahoma 

Oregon 

South Carolina 

South Dakota 

Tennessee 

Texas 

Utah 

Vermont. . 

Virginia 

Washington 

Wyoming . . . . ; 

Continental United State; 

Porto Rico 

Philippines 



200 



4,143,(100 

11,536,200 

1,219.100 

130,300 

1,. 589 ,400 
3,200 

7,334,000 
0,400 
8,800 

3,377.000 



10,026,700 
4,107,400 
2:1,005,800 
22,191,200 
24,:iOO 
1.048,600 

400 



KJS.lOO 

.5.078,100 

2.1H1,90<J 

7,:!95.10O 

lOU 



4,703,100 

11,314,700 

1,430,000 

153,300 



1,739,400 
2,100 

7,397,400 
8,400 
2,800 

3,494,800 



100 

415..500 

60,000 

12.530,700 

15,877,200 

1,771,30(1 

1,.500 

6.200 

147,400 

179,800 

102,800 

.574,700 

11,722,000 



300 

587..800 
0,700 



1,100 
267,200 
20,200 



ion 

405,400 

.56,400 

12,690.200 

13,793,000 

1,907,100 

1,400 

126,.500 

195,400 

141.000 

720,400 

11,108,5.K) 



700 



893,4-9,700 $97,604,000 

2,800 100 

1.099,300 1,287.000 

$94, .531,800 $98,891,100 

(•ctcr of the United States Mi 



72,444,800 
10,300 



67,471.000 
14,500 
67.485,000 



72,455,100 

at and the United States 



*.\s reported by the Dii 
Geological Survey, 

cies of the approaching exhaustion of the auriferous de- 
posits. There Mere, during l!)!."). no very important dis- 
coveries of new fields, .such gaius as were made coming 
chicHy from extended workings of well-known districts. 

In North America some new placer fields were opened 
in Alaska, but did not add largely to the production of 
the year, although they may do .so during 191(1. The 
most reasonable expectations of increased gold production 
are ba.-^ed upon the jiossibilities in South America and 
]ierliaps, to a kvscr extent, on probable discoverie-J in the 
Congo anil elsewhere in Central Africa, 

It is not possible to give, at this i^irly date, any esti- 
mate apin-oacbing correctness of the silver produelioii of 
the world. That of the United States showed a decrease 
of nearly 7%, the first loss reported in several yt^ars. In 
.Mexico there was again a de;-rease. owing to the disturlvd 
condition of the country and the interruption of mining 
ojicrations. In Cinada, also, there was a decrea.-^e, owing 
chi(4ly to the low price of silver that prevaiU>d during 
a considerable jiart of the year, which induced the Cobalt 
produeeis to curtail their operations. Upon the whole 
we should assume the ca.-^e of the United States as typical 



44 



THE ENGINEEEING & MINIXG JOURNAL 



Vol. 101, No. 2 



and estimate a reduction of from 7 to 10% in the silver 
output of the world. 

Table 3 gives the gold and silver production of the 
United States for two years, the figures for 1915 being 
the preliminar}' statements made jointly by the United 
States Mint and the Geological Survey. These figures 
are based upon smelter production and upon the returns 
of the mints and assay offices, and in past years have 
proved to be very nearly correct, although rather conserv- 
ative in their nature, the corrected figures being generally 
a little larger. According to this statement the gold pro- 
duction again showed an increase, the total being $98,- 
891,800, which is $4,359,300 more than in 1914. The 
gain is widely distributed, the principal increases being in 
California and in Colorado, those in the former state 
resulting from extended dredging operations chiefly, 
while in Colorado they were principally the result of bet- 
ter mill work and improved methods. California main- 
tained its position as the leading gold producer, with 
Colorado rather a close second, Alaska third and Nevada 
fourth. A second group of large producers, although 
some way behind the first four, were South Dakota, which 
is a gold producer only. Montana. Arizona and Utah, 



wliere the gold is won chiefly in connection with copper 
and other metals. These eight states produced in all 
94% of the total, the remaining 6% being scattered 
among 16 states, the more important of which were Ore- 
gon, New Mexico and Idaho. Of our insular possessions, 
the Philippines showed an increase of about 25% over 

TABLE 4. MONTHLY AVERAGE PRICE OF SILVER 

Month 1913 " 1914 1915 1913 1914 1915 

Januarj- 62 9SS 57.572 48 855 28.983 26.553 22.731 

Febniarj- 61 642 57.506 48 477 28 357 26.573 22.753 

March 57 S70 58.067 50.241 26.669 26 788 23.708 

April 59 490 58.519 50 250 27 416 26 9.58 23.709 

Alay 60 361 58.175 49 915 27.825 26.704 23.570 

June 58 990 56 471 49.034 27.199 25 948 23.267 

July 58 721 54 678 47.519 27 074 25.219 22.597 

.August 59 293 54 344 47 163 27.335 25 979 22.780 

September 00 640 53 290 48.680 27 986 24 260 23.591 

October 60 793 50 654 49 385 28 083 23 199 23 925 

November 5S 995 49 082 51714 27.263 22.703 25 094 

December .")7 7()0 49 375 54 971 26.720 22.900 26.373 

Year .59.791 54.811 49.681 27.576 25.313 23.675 

New York quotations, cents per ounce troy, fine silver; Ixindon, pence per ounce 
sterling silver, 0.925 fine. 

1914, which was chiefly due to extended dredging opera- 
tions, while the output of Porto Rico was trifling. It 
should be noted that the dredging work in the Philip- 
pines is largely under the direction of Australian and 
New Zealand capitalists and engineers, a fact which is 



1914 



1915 



50 


JAM 


FEB, 


MAR 


APRIL 


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SEPT 


OCT. 


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DEC. 


JAN 


FEB. 


MAR. 


APRIL 


MAY 


JUNE JULY 


AUG. 


SEPT. 


OCT. 


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JAN FEB MAR. APRIL MAY JuriE JULY AUG SEPT. OCT. NOV. DEC. JAN FEB MAR APRIL MAY JUNE JULY AUG. SEPT OCT. NOV 



1914 19,5 

-MKTAL I'KR'IOS IN l!iU AND lillO, .MONTHLY AVKRAGKS 



Januar}' 8, 1916 



THE ENGINKKIUNG & MINING .lOUHNAL 



45 



accounted for by the proximity of Australia to the Islands 
and the largo degree of ignorance as to their resources, 
which still prevails at home. 

The total silver production of the United States in 
1915 was 67,485,600 fine ounces, a decrease of 4,969,500 
ounces from 1914. As is well known, the silver output 
of the United States is made chiefly in connection with 
other metals, largely copper, lead and gold, comparatively 
little being produced from mines whose chief value is 
in silver. The greatest losses in silver were in Idaho and 
Nevada, the other large silver-producing states very nearly 
holding their own. The foui' leading silver producers, 
in the order of their importance were Nevada, Montana, 
Utah and Idaho. A second group, some way behind the 
first, comprised Colorado, Arizona, California and New 
Mexico. No other .state than the eight mentioned pro- 
duced over 1,000,000 oz. of silver during the year 1915. 
1914 



Coffiffissnercial Movenirriesat of 
tS^ve Pffecio-iuis Metlsils 

While the European War had little effect on the min- 
ing of gold, it had an important influence on the com- 
mercial movement of the metal. This was entirely differ- 
ent Ifom what we are accustomed to seeing in normal 
Inncs. Th(! demand for gold everywhere has been great. 
and it is probable that an unusually large portion of the 
gold mined passed into currency cither as coin or in 
liullion used in bank reserves and in the making of ex- 
ihanges. Certainly a comparatively small amount was eni- 
])lnyed in the arts, the efforts of European countries being 
to retain as much as ])ossil)le in their own hands. 

The United States has ijecn the chief beneficiary of 
the gold production of the year. The extent of our exports 
10 Europe, very far in excess of those of any previous year, 
1915 





JAN. FEB. MAR APRIL MAY JUWE JULY AUG. SEPT. OCT. NOV. DEC. JAN. FEB. MAR. APRIL MAY JUNE JULY AUG. SEPT. OCT. NOV. DEC. 


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,JAN. FEB. MAR. APRIL MAY JUNE JULY AUG. SEPT OCT. NOV. DEC. JAN. FEB. MAR. APRIL MAY JUNE JULY AUG. SEPT OCT. NOV. DEC 





1914 1915 

METAL PRICES IN 19H AND 1915, MONTHLY AVERAGES 



46 



THE ENlllNEEinXG >ir MININC .lOUKNAl 



Vol. 101, i\*u. 



was strikingly illustrated, espucially in tlie latter half 
1)1' the year, ijy the tlepressiou iu exchange and by the very 
large amount ol loans made to foreign countries. Of these, 
the most important was the advance of $50(),0()0,()00 to 
the Allied nations, bnt there were a number of individual 
loans made to various countries which we have not room 
10 si)ecify in detail, but which brought the total amount 
up to more than .$!)0(),000,000. These advances were sup- 
plemented by the return or resale to us of American se- 
curitii's held abroad, the total of which it is impossible to 
estimate. Besiiles all this the imports of gold into this 
country e.xceeiled the exports for the year by about -$-114,- 
.-)."i(),0(M). Adiling to this our own gold production of .$ilS.- 
Si)l,»)<)0. it will be seen that ])ractically the United States 
absorbed in 1913 not only the entire gold production of 
the yeai', but ov-n- $4().(iO().t)0() additional and is therefore 
at jjresent the chief gold-holding nation of the world. 

A ])eculiar situation with regard to the English reserve 
lias developed fi'om the war. The gold from South Africa 
and Australia, which normally goes direct to London, was 
largely held in those countries as a reserve which could 
be drawn u]TOn by the Bank of England in case of ueces- 
sitv. or which could be shijjped, if required, to other coun- 
tries direct. This was done to avoid as far as possible the 
risks of transit during war times. The returns of the 
great Euro]iean banks cannot be accepted in the usual 
sense as commercial balances, except in the case of the 
Bank of England, and even there the colonial reserves 
referred to must be taken into account. The Bank ot Eng- 
land, at the close of December, 1915, reported a decrease 
of $90.0S."i.flO() as com]iared with the close of 1914. On 
the other hand, the Bank of France showed a gain of 
.$ir)(),()()0,OO() in its gold reserve, that of Germany about 
.'{;90,()()0,000 and that of Kussia about $30,000,000. These 
figures are to be accepted with reserve, since the aim of 
these institutions has beea to accumulate as great an 
amount of gold as possible, while the currency of most 
of the European nations has been going to a large extent 
upon a paper basis. What the future result of this move- 
ment will be is an interesting problem. 

The silver movement has been rather light. The (h'- 
mand from the Far East, which is generally the backi)one 
of the silver market, has not been as large as usual, while a 
considerable part of the Iiulian market requirements has 
been sup])lied by direct sliipnu'nts from Australia and by 
sales of accumulated silver from China. The disturbed 
londition of the last-named country and its comi)arative!y 
small export balances have ])revented the taking of much 
silver from the West. 

The estimated rjuantily of silver used in the arts was 
probably less than usual, owing to the small deuumd for 
silver i)roducts in Europe. 'I'liere was, however, an un- 
usual demand from the JMiropean nations for silver coin- 
age, wliicli was due to the re<piirenients of sudi coins for 
the payment of armic-s in the field, wiiere jjaper monev 
was doubtful an.l dillicnlt of use. This demand was IIh' 
means of causing an imiiorlant rise in (he i)rice of silvei' 
ill November and I)eceml)er, as is shown in the aecomiiany- 
iiig table, wiiieli gives the average prices in London and 
New York for tliree years past. The general level, it will 
be seen, was rather low in 1915. The United States Mint 
was also a consi(leral)le purchaser of silver. 

The market would have probably gone lower than it 
did, had not Ameiiean and (lanadian iirodneers held back 
supplies and refrained from jjressing silver for sale. 



At the beginning nl I'.M.'J the platinum market at New 
York was (juiet at .$41(« 4'^ per oz. for retineil. During the 
first quarter there was but little change, though i)rices 
were easier if anything, some business being reported as 
low as $38. 0.1 the other hand, there was imjirovement 
in the market for crude platinum at Ekaterinburg. The 
Russian government stopped the export of platinum. At 
a conference of gold and platinum producers in I'etrograd 
it was reported that the smaller producers had ceased 
working. The stock of platinum was large, but generally , 
it was in strong hands. In April the Russian government 
IRMinitted resumpticui of exports, but imjiosed special con- 
ditions. However, there was no dillieulty iu se(niriiig 
])ei-mits for e\]iortation to friendly countries. About 
Mav 1 it was reported that 4fi,000 oz. of crude platinum 
was held liy ihe banks in Petrograd and Ekaterinburg. 

At the mid-year the jirice for n'lined ]ilatiiium at .Ni' 
York was $3';'(r( 39 |ier o/. About Ihe middle of Augu- 
an upward lendcncy began to be e.xhiliiled, the Him 

AVERAfiE PRICES OF PI.ATIM.M 
(In DnlhirspcrOuncoTroy) 

IHU • 1915 

liussia. Cnide Metal liil.s.sia, Cnidi- Metal 

New York 83% Platinum Now York s:!% Plii'ii'Uiii 

Ueiimil SI . Prtvrs- Ekatorin- Refinc<l St. Peters- Kkoterin- 

Platiiium burg burg Platinum burg burg 

.T.anuai^'.. 4.i 3S 3(>.43 36. 2S 41.10 

Fcbru.-iVv... 43.50 36.36 36.28 40.00 30 :W 30. OS 

March.:. . 43.50 36.39 36.28 39.50 30.;J8 30 OS 

April 43.50 36.46 36.28 38.63 30 38 30 OS 

May 43.50 30.41 36.28 38.50 .iO.SV 30 OS 

.Tune 43.50 36 09 36.00 38 00 32.39 31.02 

July 43.50 35 72 35 72 38.00 32.39 .■!1.02 

August 50 20 39.25 32 30 30.73 

September.. 50 00 . 35.72 .50.00 

Ortober... 49.50 33.84 .54.50 37 98 38.70 

November.. 45.45 62. 1)3 17 4ri .il< M 

December.. 42 19 85.50 .56 40 .56 25 

Year 45 14 47 13 

New York average for year 1913. $44 .SS; 1912, $45 .55; 1911 $43 12; 1910, 
$32 70 per ounce Troy. 

change in the tpiotation being to $39l/2@-H- If was not, 
however, until the first week of September that consumers 
awoke to a realization that the market was short of sup- 
].lies. In that week the price ro.se from $4'3 to $4S(ct)50. 
This was about the season when manufacturing jewelers 
are accustomed to buy largely. During the remainder of 
Sc]itembei- the market was uneasy. This situation con- 
tinued into November, when the ipiotatioii at New York 
was $.'J-.ifa .'iti per oz. In the meanwhile there hail been a 
crazy market ni Hu.-isia, where platinum had been bought 
largely for ex|)orl, wherefur il was as good a niedium 
of exchange as gold, while Iheie was an increased domes- 
tic demand from sulphuric-acid coneenlrators. who were 
expanding their phints. 

During November the jirice for platinum at New Yorl 
rose r;ipi(lly. I?y the end of the montli Ihe ipiotalioii \' 
$';il(r;;i pel' i.z. ill liu.ssia there was a .similar advan- 
and from there il was reported that abandoned minev 
the Urals were being reojiened. During December ; 

markel was very e.xcited, and at the end nf tlir i Ili li^ 

ipiotalion was about $90 jier oz. l.'elineis were disineliiH W 
to (piiite except lo their regular eusloiners. and siippl" 
in l,'ussi;i were being held back, their holders e.vpectn 
.■fill higher prices. 



Mine MniiiiriK-tiirril mill Solil in tlic United States In 1!>I 
iiniDiinted lo 3,3S0.92S liiii.M, uccoidlnjc to llic United Stiil' 
r,eol(i»fir.Tl Snivcy, a dcrreiise of r>.96';{. from 1913. Pcnii 
.sylvnnl.i prodiici'd tlio laiRCst qunntlty. 852,927 tons; Ohio II 
Hecond InrRpwI. 4S7,fi!i3 tons. Total numljcr of Uilnn Is 2.::;' 
The hydrnted-lliTie production was 515.121 tons 



Jaiiuurv 8, 1!)16 



THE EXOINEERTNG ^' MTNINCF 'JOCICOlL 



47 



1879 
1880 
1881 
1882 


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1885 
1886 
1887 
1688 
1889 
1690 
1891 
1892 


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fyice for Pi^ Iron up io 1885 represenfs Foundry No.l of- ffiiladelphia; 
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COURSE OF METAL PRICES SINCE 1S71)— ANNUAL, AVERAGES 



^•M«i-;*T^;.,<\vp",vr| '?•'■■' 



TIIK KXtiJXKKlMX*; 



.\II.\I.\(; .loL'lJNAL 



Vol. iOl, No. ■? 



The situation of copper at the end of 191.5 may be 
diagnosed approximately Irom the li'iures in tlic ac- 
lompanying tables. The first table gives the smelters' 
prudiiction of copper in the United States, this being the 
sinumary of reports received from all of the producers. 
The distribution by state of origin is approximately 
correct, but those figures are subject to more revision than 
is the grand total, for the reason that it is impossible to 
niake a precise allocation at this early date. The copper 
production of the United States in 1915 was larger than 
in 1914. In the later year the mines were operated at 
reduced rates for five months. In 1915 the curtailment 
was generally in effect during the first quarter only, and 
during the remainder of the year all of the companies 

SMELTERS' PRODCCTIOX OF COPPER IK THE UNITED STATES 
(In Pounds) 

State !ni2 ini3 1014 1915 

Alaska :w.i;()L'.(K)n 24,t.'i2,non 24.2.s.s,o()o (u.KfKi.mio 

Arizona :;.-.7.'i:.2.'m;l' :!<.«i>4'.i.Tir. ijsTHTs.s.iJ 44:!.(ir]|.:!:!l 

California :'.l .iiii:i,iij:( :«.:i'.iii.27L' i;'.i.-,i.-,.4vn :;s.:ii:!.'.i.'7 

Colorado T.r.ie.oiH) 7.iw(i.(ioii l<i,l(il..".7',i r, ^iiii.iiiio 

Idaho .•.iii-,i,.",-12 s.i:;t.ii-'s i,vor,,4i,(i .-,,7-';),(iiiu 

Michigan 2 il .iL's.lsi. l.V.i.4:;7.2i,2 l.-yjivrn.; 241.951.921 

Montana :;nM,2l7.7:',.-. 2s,-.,:i;;i..l '..; 2t:;.i:i'i.7:!7 2(>.5,779.&4:S 

Nevada. s2.."..;(Mi()S M.iisi.'.liil i>ii.(i7s.ii<l5 G5.59S 475 

New Mexico 27.4X.S.912 4(i.y.>i.414 ()4.*i^..'s92 67..S2".73() 

Utah 131,673..'S03 147,.591.9.55 153.5.55,902 188.080,000 

Washington 1.121,109 448.805 1(5.5.023 * 

Ea^st and South 1S.502,I).55 24,333.014 19.213,9B5 20.90().143 

OtherSlateB 4,396,BG7 4,1.5.5.135 4.257.0SS tl5.S2-l.395 

Totals I,241.77()..WS 1.22.5.73.5,834 l,1.5-<,.5Sl.s7li l,424.(14ll,.5li5 

'InHudwI in "Other SIntis " tlncluded in this fiwiru is agiioU deal of cup- 
piT that could not be distributed as to oripin at this time. 

SMELTERS' PRODUCTION 
(In Pounds) 

Source 1012 1913 1914 1915 

N.American ore. 1,489,170,5(52 1,438,565,881 1,327.488,479 1.010499.571 

Foreign ore 53,701,307 .55,803,202 .50,101,308 44. , 538,2 17 

Scrap 11,949,348 22,427,.8S9 20.894,5.59 15,275,991 

Totals 1,554,827,217 1,516,79B.972 1,398,484.340 1,076,313,769 

To foreign refiners 45,735,673 36,682,605 30,765,920 4'J,062,900 

To .Vnierican rc- 

fiiiirs 1,509,091,544 1,480,111,307 1,301.718.426 1,030.250.809 

Crude copper im- 
ported 144.480.144 109.31.5,869 131,12.5,076 140.000.000 

Total crude 

copper 1,0.53,471,(588 1,619,430,230 1 ,492,.'*43,.502 1.776.250.869 

strove to force production to the utmost. In so doing, 
American refining capacity was taxed to the maximum. 
The second table gives tlie total supply of crude copjier 
available to American refiners. The (hi id table sum- 
marizes the world's production of co])]H'r in 191."). These 
figures are offered with consideralile diflideiuc, for the 
reason that it was impossible to obtain flie usual reports 
from Europe and Africa. Cable advices from London on 
Jan. .") were to the effect that copiier-pniduction figures 
were quite impossible, but it was e.xpected that the 

WORLD'S PnOni:CTION OF COPPER (•) 
(In Metric Tons) 

C.untry 1012 1913 1914 1915 

l!ml«l States .561.200 .55.5,990 .525,.529 646.212 

Mexico 7:!,(517 .58,323 30,337 30,969 

Canada MM-i .34,880 31,027 47,202 

Cuba 4,393 3,:ftil 6,251 8,M:i(i 

AuBlralasia t47,772 t47,325 37,.502t 32,512 

I>eni 20,4X3 •2.5,4.S7 2:<,()47 tt.32,41(l 

f 'liilc ,39,201 .39, (.34 40,870 17, 142 

lUivia 4,081 .i.0.5St 1.3(Mit •*:t,lK«> 

Japan (52, 486* 73,1.52t 72,0385 57.5,(KKI 

UuTOM 33,.5.5«± -M.-iUt 31,93Nt •*IO,(l'KI 

Oermany ai.:t03t ■25.:«ik+ 30,4801 **.35,(i(KI 

Africa l(i,(132t ■22,s70t 21,1.3.5+ •••.•7,fl!)0 

Spain and Port ucnl .59,873t .5l.(i90t 37,0991 ••.3,5.0(KI 

thlicr (XJuntriM 20,.5.5.5t 27,l.58t 2.5,l76t **2J,'no 

Total* 1,020,022 1,00,5,978 92-1,888 1,061.283 

* "The etatu'tien in this table are our fiwn compiljitionft, exoi'pt where specinllv 
noted to thi eontnirv. + A" re|).irtrd by ili-nr>' R. Marlon & C\<. J Ah oflicinlly 
reported. S Privately roinmunii-ntol to us from Japan. ♦•Estimated. ttConi- 
municated by L. Vogelslein & Co. 



Ore, matte, etc.. contents. 

Unrefined, blister, etc 

Ingots, bars, etc 

Plates and sheeus 

Wire 

Old and scrap 



October Ten Months 
264,085 1,901,841 

202,239 

44,141,210 452,906.9,53 

537.0:i3 23,285,230 

1,946,4'20 44,067.775 

I),004,050 



Total. 



46,889,300 529,028,097 



111 addition iiiamiraitures of copper, weight not given, 
were t'X])ortcd, Milued at •$."j,77:'«,91() for tlic Icii months. 

'I'he imports of copper for October and for the 10 
months ended Oct. 31 are reported as follows, in pounds: 



Ore, matte, etc., contents 

Unrefined, blister copper, etc. 

Bars, plates, etc 

Old and miscellaneous 



October Ten .Months 
9,330,386 97,570,150 
18,741,1.50 74,850,217 
2,003,5,54 78,471,891 
599,406 5,959,355 



Total 30,683,496 256,857,624 

'i'lie actual tonnage of ore, concentrates and matte, of 
which the contents are given, was 1:0..j70 tons in October 
and 351,178 tons in the 10 months. 



Jaiuiarv — The year opened with copper at about 
l'2.7(lc. Improvement in the demand manifested itself 
almost immediately, and the price rose steadily, the tiuoUi- 
tion at the end of the month being H.JrO'o 1 1.50c. There 
were some mysterious features in the market, which later 
in the year turned i^ut to be connected whh a liuge specu- 
lative o])eratioii. 

February — With the beginning of tliis month there \vi\> 
a lull in buying. The large producers made no effort to 



•On any Riven day copper is apt to be sold at a range '>' 
price even wiiin the inaikct Is stationary, such raii|ic e-xhlbil- 
in;^ the competition amonsr sellers and the shoppinB innoiii4 
bu.vcrs; also there are differences in price iccordliiR to con- 
ditions of sale. In periods of activity there arc. moi eovii-. 
ihaiiKes In price between the bcKiniiintf and end of a day. In 
(lUotiiiK liniires in this nnnnal review wc have refi r. nci (n 
what we have in our weeUly market reports dtiiinR tin >eai 
coiiipKted as the daily avcraije price. (.Juotatloiis an ic'lni.,! 
to terms of net cash. New York. Copper for domestic ilrh\ii.\ 
is cdinmiinlv sold on "regular terms." "HeKtdar terms" in tin 
sale of copiH-,- mean that the .•seller delivers the idpi.ei- to tli. 
Iniyer, piiyiiin the freiKht on it. and allows liim 30 days aft i 
his receipt of the copper in which to make paymetit. or if Im 
ehuoses to pay cash, the bill Is discounted at the rate of M;'>- 
To arrive at the dilTcrcnce between a sale upon these tcrlM^ 
and a cash sale f.o.b. iiHnery, which is regarded as beiir..; 
f.ob. New York, the interest on the value of the copiH i 
while In transit is commonly reckoned. This is a matter "' 
10 (lays. When copper sells at lUVtC, regular terms, (In- 
eciiilvalcnt net price Is therefore about IS.DSe.. there bclir.; 
(I.O!(12Bc. dlseouiit. fl.lc. freiijht and 0.0304c. loss of interest, 
a total of (1.22c. The frel)fht rate is naturally a variable 
belnir less to some nearby factories and more to some of tlu- 
more remote ones, .\liout lOc. per 100 lb. is regarded as beiii:; 
an averaire t lanspnrtiitlou cost. 



princi])al countries would show marked decreases. .\ 
report from our correspondent in Petrograd indicate> 
n large increase in the Russian production, owing to the 
mines of the Catuasus being in the war zone. The 
returns from the United States, ilexico, Canada, Cuba, 
x\ustralia, Peru, Chile and Japan are approximately 
comjih^te. They show a further diminution in the pro 
duction of Mexico, which in 1915 dwindled almost to 
insigniiicance. Japan and Chile, on the other hand, 
showed increases, operations among the Japanese miip 
having been forced, while the production of Chile w;i 
swelled by the growing output of Braden and the new l 
output of Chuquicamata. 

The exports of copper from the United States in Oc- 
tober and in the 10 months ended Oct. 31, as reported 
by the Department of Commerce, in pounds, were: 



,laiin;ii\ S. Illli; 



'IIIK KXCIXKKI.'I.X*; i> .M1X1X(; JOLKNAL 



19 



Sdliril, ailditiiiiuil husincss. Iiciii;;- well Siilislii'd with tlie 
large sales effected duriiii.' tlir prcxious three months, hut 
dealers anxicjiis to do hnsiness nil the time immediately 
hegaii to i|uote the markel down, seekiuff the level at 
whieli (■oj)|)er could lie liii-iii'd o\cr. After a decline to 
ahout I t.l.'jc., tiiere was a I'ally 1o I l.^rifr' l-t.Soc, where 
the iiioiith closed. Duriii"' Fehruary the market was 
rather confused. 

.March — Imjjrovenient eai'ly nianilc-ted itself, and the 
price had a I'ising tendency right llii'ough the month. At 
liu' end the quotation was l.')..5()(6f) 15.60c. The disturh- 
aiice of conditions respecting the transaction of foreign 
husine.ss hegan to attract nnu-h attention. On Mar. 17 
it was written "with respect to .sales for export there are 
all kinds of uncertainties as to exchange, insurance and 
freight, and even of freight room at all, and a shipper 
can seldom figure out what he is going to realize until the 
husiness is completed." Also it was noted in Marcli that 
the demand for copper, hoth foreign and domestic, was 
attrihutahle to military requirements rather than to 
peaceful. 

.\pril — ^larket report^ hegan to talk ai)out inipro'c- 
meiit in domestic consuni]ition, es]iecially among the sheet 
lolli'rs and wire drawers, hut tlie im|)rovement was char- 

MONTHI.Y .WEKAGIC I'JilCIO OF COPPER 



Elpctrolvtir Loudon Standard 

Muiilli U)12 1913 'mu li)ir> 1912 191.3 1914 191.5 

Jan.. 11094 16.48S 14.22S l:i.B41 02 71)0 71.741 64.:i04 HO 75(i 

I'Vb... 14 0X4 14 971 14 491 14 :in4 1)2 S93 65. .519 0.5 2.59 (i:i.4fl4 

Mar... 14.69S 14.713 14.131 14 7S7 0.5 SKI 0,5 329 r4.270 66.1.52 

.Apr.... 15 741 15.291 14.211 lO.Sll 7il_'Ml i-,s 1 11 64.747 75,090 

.\I.-iv... 10 031 15,436 13.996 lK..50(i 7_' ;V' i.s v:i7 03.1S2 77,600 

.liin'p... 17 234 14.672 13.603 19.477 7s J'l i.7 Mil 61.336 S2.574 

.hllv... 17 190 14.190 13.223. IS 790 7'. ',;i. •! Hili 60. .540 76.011 

,\ni; ,, 17,498 15,400 * 16 941 7sii7ll (.'ijiMl * 68.073 

Sipt... 17. .508 16.328 * 17 .502 7s 7' ,' 7: IJ,'. * 68,915 

OH 17,314 16.337 * 17(180 7'. ;-'' 7 ; N:; * 72.601 

Nov... 17 326 15.182 11.739 18.627 H. viu i.v j7.-> .53 227 77.744 

D<-c., 17.370 14.224 12.801 20 133 7.5.511) 6.5 223 56 841 80 773 



Yrar... 16 341 15 269 17 275 72.942 68 335 72 532 

New York, conts per pound. London, pounds storting per long ton of standard 
eopper. * No quotations. 

acterizcd as "sjiotty." 1'lie hrass makers were already 
very busy with war orders. Tii the second week of April 
the market rose shar]i|y upon fairly large transactions. 
Fancy prices hegan to he realized on special brands of 
Lake copper. As the month wore on, large buying devel- 
oped, and at the end of the month the quotation was 
18.7()@18.8()c. 

May — AVith the opening of this month there was a lull 
again and a shading of prices in some quarters. During 
the second half the ])rice declined to about 18.30e. At 
this time the ralnmet & lleihi company was reported to 
he well sold ahead at 2:?c. per Ih., and domestic consumers 
who ]ireviously hud never used anytiiing but Lake copper 
Were said to he considering the use of electrolytic. 
'I'oward the end of !Mav the market rallied, and the month 
elosiMl at 1S..')nc^, IS.fjO,-. 

.lune — About June 1 an active demand began to de- 
xelop with buviiig of such magnitude as to start a sliarp 
ad\iince in the price. .\t the middle of the month an 
aM'i'age of 20c., lu^t cash, was realized. The volume of 
business consnmniated was stiquMidous. It was reported 
■A Ibis time thai the .\iiaconda company had sold 1(1% 
of its ex))ecteil out|nit in l!)l(i at ]n-ices in the neighbor- 
hood of -^Dc. The great buying nuivement having spent 
itself, the market relapsed to lO.l.^frTiin.T.lc. at the end of 
I be month. Noteworthy features at the mid-year were the 
unusual disparity between the firices for electrolytic and 
casting copper — abiuit Ic jier lb. — that still prevailed. 
Prices for elcctrolytir coppn- and standard in the London 



market had lieen entirely out of joint for a lon^' time, for 
the reason that there was no longer a free market for 
standard, iiiasmueh as no copper could be exported from 
Kngland. Foreign refiners were therefore unable to buy 
warrants and accept delivery of the copper for shipment 
to their refineries. 

July — During the first half the market was dull, but 
there was no great change in price. During the second 
half there was more pressure to sell, and the price had 
declined to 1 7..'i.5((7 17..5oc. by the end of the month. The 
British government decided to release raw copper for 
ex])ort with certain stipulations and guarantees, and some 
of siuli cop|jer was bought by American refiners, but the 
extraordinary differential between refined and standard 
continued throughout 1915. 

August — This was another dull month. About the 
middle tlie market became weak and business was done at 
ir).75@15.S5c. This relatively low price attracted buyers 
who really were in need of copper, and their demand [nit 
the market up to 17.3;')(7/ 17.8oc. by the end of the month. 
but sellers were injudicious, advancing prices too rapidly. 
and liuyers were frightened away. Stocks at refineries 
were reported as not increasing to any great extent, owing 
to the large deliveries .still being made on old orders, hut 
pidduction was proceeding at a high rate — one estimate 
being IfiO.OOO.OOO lb. per month — and this caused some 
concern. There was even some gossip among the pro- 
ducers about taking steps to curtail the output. 

September — An improved .sentiment among the ]irin- 
cipal sellers of copper was discernible. Certain houses 
that previously had been rather bearish began to be more 

.\^'ER.\GE MONTHLY PRICES OF COPPER MANIF.-\CTUKES 
fin Cents per Pound) 





Copper 


Sheet 


Copper 


.Sheet 


Copper 


.Sheet 




Wire 


Copper 


Wire 


Copper 


Wire 


Copper 


January. . . . 


19.09 


23.50 


15.94 


20 75 


14. SO 


19 .50 


February. . . 


16 38 


22.50 


15.88 


20 50 


15 19 


20.2.5 


March 


16.39 


21.50 


15 60 


20.35 


16 Oil 


20.0! 


.■\pril 

Mav 


16.50 


21.50 


15.25 


20.25 


18.03 


22. 3S 


16.50 


21.50 


15 23 


19.90 


19.95 


24. ,50 


June 


16.18 


21.10 


15.03 


19.56 


21.13 


25.25 


July 


15.88 


20. 50 


14.88 


19.38 


21.63 


25.50 


.\ugust 


16.60 


21 50 


14.63 


18.80 


19.25 


23.90 


September. . 


17.84 


22.50 


14.34 


18.00 


19 34 


23.50 


October 


17 75 


22. 50 


13.34 


17.38 


19.28 


23. 50 


November.. 


17.28 


21.15 


12 50 


17.50 


19. « 


24 44 


lii'cember.. 


15 79 


20.50 


14.25 


18.88 


21 81 


26 00 


Year... 


10. S5 


21.69 


14.74 


19.24 


19 21 


22 93 



optimistic. However, for several weeks the market con- 
tinued to be dull and di.sa])pointing-. Domestic consumers 
ai)peared to be acting in concert in staying out of the 
market, a feature of their policy that was becoming in- 
creasingly prominent. The matter of freight rates and 
freight space for shipments to F.urope caused a good deal 
of concern among shippers. The rate on cojiper to Euro- 
pean ports at this time was about 30 to 40o. per 1i'>0 11). 
Toward the end of the month there was some imiirove- 
ment in demand. On Seiitember 30 the <iuotation was 
17.S0(??18c. 

October — The Lake ]irodueers, who liad realized 'V-w. 
]H'r lb. in ^lay and June, liad remained out of the markel 
for several nioidhs. ho]n'ng to be able to si^ll their product 
once more at a premium. Disapiiointed in this, they 
reentered the market and tried to se'l in comiietition with 
electrolytic co]iper. hut did not find this easy. During the 
time wlicn Lake was so scarce, the iiroducers of electro- 
lytic took some trouble to find a foothold for their product 
in quarters where previously it had not been used. Wlien 
the Tiake ])roducers tried to get hack their old customers, 
thev were told in some cases that electrolvtic was liked 



50 



THE EXGINEEEI:NG ^^ Mim]!TtrJOtrE!TAE 



Vol. 101, Xu. 2 



lietter. By the middle of October the price for copper 
had declined to about IT.aO^lT.eOc. Then there was 
another improvement, which turned out to be the fore- 
i-uuner of a great demand, and at the end of October the 
quotation was 17.70@17.80c. During October the copper 
market was in a rather chaotic condition. Certain pro- 
ducer.'i who were fortunate in having large stocks of copper 
abroad made excellent sales out of warehouse there, and 
being satisfied with that business, made no effort to do 
an\-thing here. Other protlucers, in selling for export, 
found it difficult to arrange for freights, and taking 
chances on freight rates and exchange, their probable net 
return was a good deal a matter of guesswork. Some 
producers were disposed to take business whenever and 
however they could get it. The competition of the Lake 
producers was sharp. 

Xoveniber — The strike at the Nichols refinery, early in 
this month, started something of a scare among buyers. 
On Xov. 15 the advance began to be rather violent. It 
continued without interruption right up to the end of the 
month, when the quotation was 19. 50@ 19.75c. The 
volume of business consummated in Xovember was huge, 
being but little less than that done in June. 

December — ^With the opening of this month the market 
became more quiet, the price settling to a basis of about 
19V^c., net cash, Xew York. The matter of freight rates 
to Europe became e\en more troublesome, contracts at $1 
]icr 100 lb. being made early in the month and at $1.50 
toward the end. About the middle of December domestic 
manufacturers, especially some of those who had am- 
munition contracts, began to exhibit signs of nervousness. 
These manufacturers had failed to contract for all the 
metal that they needed for their own ]>roducts already 
sold. AVIien they attempted to cover their shorts, they 



found that copper was not easy to get and that they had 
to bid for it. On Dec. 22 was announced the consumma- 
tion of a transaction whereby the British government 
purchased 60,000 long tons of copper from the two lea^l 
ing producing interests, for delivery during 1916, tii 
price being in the neighborhood of 20c., Xew York. Tli 
news of this and the realization that but little unsui 
copper was available until after the first quarter of 191 
excited the market. At the end of the month the pri' 
was 2214c., net cash, Xew York. 

Copper SiBacdl Zses© Fs'odl^cfeaosa 



By B. B. Thayer* 

Last year was a record year, so far as prosperity' w: 
concerned, throughout the entire Butte district, and t! 
condition was reflected generally throughout the Stat. 
of Montana. On account of the high prices received foi- 
all the metals, production was at its maximum and all 
tlie companies produced at least their normal output. 

The Butte & Superior made its largest output in zinr 
on record, and there is no indication at the present 
time of any cheek during 1916. What has been sai^! 
of the Butte & Superior applies likewise to the properti - 
operated by W. A. Clark, and the prediction made 
number of years ago — namely, "that Butte would beconu 
as important a factor in the production of zinc as it hail 
been in the production of copper" — has been fulfilled. 

The Pilot-Butte company was ia litigation durii 
1915 with the Anaconda company over the ownership m 
certain orebodies, and the case is still in the courts. Th<- 



•Vice-President Anaconda Copper Mining Co.. New York. 




IMUNCIPAIv COPPER-XIIXINO D1.STRICTS. SMELTING WORKS AND ELECTROLYTIC REFINERIES IN THE 

UNITED STATES 



,Jjii]iuir\' S, J'JlG 



TliK KX(iI.\KKHlN(; 6- .\lJNlN(i JOLHNAL 



Alex Si-ott coinpaiiy npuratcd continuously witli results 
very satisfactory to the niaiiaj^'onient, it is statefl. The 
oflicials of tiie East Buttu company reported satisfactory 
])n)<rrL'ss and are contemplating more extensive operations. 

The condition of the mines of the Anaconda company 
improved very materially durin.ij: li'l.j, and developments 
therein were very gratify in jj-. The new work undertaken 
at the Washoe reduction works was practically completed, 
and all of the improvements, when in full operation, will 
reduce considerably the cost of copper production. The 
Anaconda company will probably enter the field as a zinc 
producer on a large scale, as a process has been evolved 
at the Washoe works which it is thought will to a certain 
t.xtent revolutionize the metallurgy of zinc, in that no 
smelting whatsoever is carried on in the reduction of 
the zinc ore, the process being entirely leaching and 
electrolytic preci))itation. 

I The Anaconda electrolytic zinc process is di'sci-ihed 
elsewhere in this issue. — Editor | 

By J.vmes ^IacXaugiitu.v* 

Jjast year was oue of gradual and continuous improve- 
ment. At the end of 1014 practically all the nonpro- 
ducing mines were closed and all the producing mines 
except Jlohawk and Wolverine were running at reduced 
rates. The situation improved rapidlv', so that the close 
of 191j found all the producing mines pushing produe- 



work and bonus systems underground havi- been exii-inied 
so that the willing and efficient miner or tramnur .an 
make almost double the basic rate. The use of the C'arr 
bit has resulted in an increased output per miner equiv- 
alent to his total output of a few years ago. This 
increa.<<ed efficiency shows itself not only in decreased 
eo.sts, but more especially in making available tremendous 
t(jnnages of low-gra<le ore that woidd not otherwise Iw 
commercial. At the Copjjer Range mines the use of .sand 
filling for stopes has been continued and a closer selection 
of rock underground has resulted in a decided lowering 
in the cost per pound of copper produced. 

At the several mills the changes have been along the 
line of increased efficiency, chiefly by reason of lower 
]TOwer cost and finer crushing. The use of the low-pres- 
sure .steam turbine following the steam stamp has become 
standard ; Ahmeek, Champion and Isle Royale put in 
tiiis equipment during 1!)1.5. The Copper Range Co. 
IS increasing its fine-grinding capacity as power permits. 
using Hardinge mills and steel balls. Calumet & Heda 
i)egan the recrushing of its accunmlated tailings during 
1915, and results have exceeded expectations. This in- 
stallation is the largest tailings ])lant in existence, having 
a\ailal)le over 35,000,000 tons of material, all lying with- 
in a radius of less than a mile. 

The excellent results of 1915 were accomplished by 
friendly feeling and cooperation between employer and 
employee. Most of the companies showed a willingness to 
share their prosperity with the men to an extent beyond 



Works Situation 

Nichols Copper Co Laurel Hill. X. Y. 

Rahtan Copper Works Forth Amboy, N. J 

Raltiniori- Copper Snif?lting and Rolling Co Canton. Md' 

American Smelting and Refininp Co Perth Ambov, X. J 

Ignited States .Metals Refining Co Chrome. X. J. 

Ralbach Smelting and Refining Co. ... Xewark, X*. J . , 

.Vnaoonda Copper Mining Co . . Great Falb, Mont. 

Tacoma Smeltmg Co . . Tacoma. Wash. 

Calumet <!: llecla Mining Co . Buffalo, X. V. 

Calumet & Hccla Mining Co Calumet, Mich. 



ELECTROLYTIC COPPER REFIXERIES OF THE UNITED STATES 

1913 Capacity, 
Poundst 
400,000,000 
400,000,000 
348.000,000 
210,000.000 
200,000,000 
48,000,000 
6.5,000,000 
30,000,000 
,->5,000,000 



400,000,000* 
30O,OU0,0OOt 
312,000.000* 
192.000,000* 
180,000,000* 
4.>i,0(.)0,00»» 

c.-i.ooo.om* 
;ir,,(x 10,000* 

,5.3,000,000* 



1914 Capacity. 
PoundsX 
400,000,000 
400,000,000 
330,000.000 
210.000,000 
200,000,000 
4S,t)0(),(XK) 
0.5,()(X),000 
48,000,000 

§ 
05,000.00011 



1915 Capacity, 
Poundst 
400.000.000 
400,000,000 
3.>l ,000,000 
240,000.0a) 
200,000.01X1 
4S,00a,0(KI 
05,000.1HKI* 
120,0«1,(M)II 
§ 
65,000,000 



* Official figures furnished by the respective companies, t Esi 



Calumet & Hccla dismantled in "fall of 1914. 
a capacity of about 180,000,000 lb. 



Xew works put into operatit 



1,648,000,000 1,768,000,000 

tetl. t All of the figures for 1013, 1914 and 1915 



, 1914. ** Xew- refinery of Anaconda company, 



officially furnished. § Buffalo works of 



construcf'on, will have 



tion to the limit and all non})ro(huing mines again in 
o]je ration. 

The new jjrojjerties to enter the eop]>er-production class 
(luring 1915 were the South I^ake, New Arcadian and 
White Pine. The production of the first two mentioned 
has been limited to an occasional mill run, but White 
I'ino has been a steady producer on a limited scale since 
April. This rock has been much advertised by the 
newsjiajiers as being ])henomenally rich. This statement 
is probably made becau.se of th(> inherent optimism of 
the correspondents and the isolation of the property. The 
fads are that the rock is but little richer than the average 
of the district. Exploration in the neighiiorhood of the 
White Pine has led to the organization of the White Pine 
Extension Jlining Co., the only new incorporation in this 
district during 1915. 

If 1915 was notable for increased activity in the eon- 
sumption and production o'' eo])])er, it was no less so in 
the effort to produce cheaply without its heing at the 
expense of the wage earner. Wages have been gradually 
raised as the price of cojiper warranted it, until they are 
now the highest ^ver known in the district. Contract 

•Second vice-president and general inan.n^tr, Caltiniet ^: 
Ilerla Mining Co., Calumet, Mich. 



the immediate necessities of the labor market. With 
the continuance of this cooperation the Lake .Sujierior 
copper district faces a future brighter even than the past, 
for every decrease in cost carries with it the ability to 
extend the field of operation to ore otherwi-'- i-i-n- the 
point of profitable extraction. 

The smeltery at West Norfolk. Va.. is e(|uippe<l to 
produce 20 tons of bli.sfer copper from ore ]xm- day. 
Electrolytic copper is being successfully ludilueed direct 
from roasted pyrite cinder from the sulphuric-acid works, 
although from some solutions cement copper is being 
produced. The residue, after the copper is extracted, is 
sintered and sold for the production of iron in iron and 
steel works. 

The Virginia Smelting Co. has begun the production 
of liquid SO. from waste smeltery gases and is reclaiiii- 
iiig very valuable land on one of the best harbors in the 
Tnited States by filling in the mud Hats with slag from 
the smeltery. .\ pier of slag has alreaily iieen built 
1.500 ft. out to deep water. 



32 



THE EXGIXEERING or MINING JOUKNAL 



Vol. 101. No. 2 



In this plant ore is smelted for the recovery of copper, 
silver and gold, after it has been mined in Butte, roasted 
at Kansas Citj' to produce sulphuric acid, and smelted 
in Oklahoma for the recovery of the zinc. Pyrite is 
mined in Canada, roasted in Massachusetts, New Jersey, 
New York and Pennsylvania, and the cinder is smelted 
at ^Vest Norfolk or the copper is leached out and precipi- 
tated and the cinder sintered. 



tion of a leaching plant to treat the tailings from th' 
concentrator was commenced during 1915. Addition - 
and improvements to the concentrator have resulted ii 
increasing its capacity to 800 tons per day. 

Prospecting in the district was not carried on as ener- 
getically during 1!)15 as formerly, principally bcause >■ 
many men were attracted to the line of the new railwa; 
being built bv the Government from Seward. 



By Stepmex Birch* 

During 1915 the copper mines near Kennecott owned 
by the Alaska Syndicate were transferred to the Kennecott 
Copper Corporation, and the stock of this company was 
placed on the market. These mines produced from the 
time of the formation of the Kennecott Copper Corpora- 
tion, May 2T, 1915, to Nov. 30, 1915, approximately 
52,000,000 lb. of copper, averaging about 8,660,000 lb. 
per month, at a cost of under 5c. per lb. Dur- 



?ffim< 



of 



The accompanying table, corrected up to Dec. 1, 1915, 
gives the names of the companies engaged in copper 
smelting in the United States, Canada and Me.xico; 
the situation of their works, the number of their smelt- 
ing furnaces and the estimated annual capacity in terms 
of tons of charge, meaning ore and flux, but not includ- 
ing fuel. It should be noted, however, that not all of 
the furnaces reported are in operation all the time. In 



COPPER-S.MELTIXG WORKS OF NORTH MERICA 

No. of Re- 



Situation of Works 
Aguascalientes. Mex. 



No 



r,f Blast 



Company 
American Smelting and Refining Co 

.\merican Smelting and Refining Co Perth Amboy, N. 

.\merican Smelting and Refining Co Omaha. Neb 

American Smelting and Refining Co Ei Paso, Tex 3 

American Smelting and Refining Co Mitehuala, S.L.P.. Mex. 3 

.American Smelting and Refining Co Hayden, Ariz 

.American Smelters .Securities Co Garfield, Utah 4 

.American Smelters Securities Co Tacoma. Wash. .. 2 

.American Smelters Securities Co Velardena, Dgo., Mex ... 3 

.Anaconda Copper Mining Co Anaconda, Mont 3 

.Anaconda Copper Mining Co Great Falls, Mont 2 

.Arizona Copper Co Clifton, .Ariz 

Balakala Consolidated Copper Co. ft Coram, Calif 3 

Compagnie du Boleo Santa Rosalia, Mex 8 

British Columbia Copper Co Greenwood, B. C 3 

Calumet & .Arizona Slining Co Douglas, .Ariz 2 

Canadian Copper Co Coppercliff, Ont 7 

Cananea Consolidated Copper Co Cananea, Son 8 

Consolidated .Arizona Smelting Co Humboldt, Ariz 

Consolidated Mining and Smelting Co Trail, B. C 5 

Copper Queen Consolidated Copp*T Co.. Douglas, .Ariz 10 

Detroit Copper Mining Co Morenci, Ariz 1 

Ducktown Sulphur, Copper and Iron Co Isabella, Tenn 2 

E,-»st Butte Copper Mining Co Butte, Mont 2 

Granby Consoliiitod Minins. Smelting and Power Co. Cirand Forks, B. C S 

Granby Consolidated ^.Fining, Smelting and Power Co. Anyox, B. C 4 

International Smelting Co Tooele, Utah 

International Smelting Co Miami, Ariz 

Mammoth Copper MinLne Co Kennett, Calif 5 

.Mason Valley Mines Co.ft Thompson, Nev 2 

Mazapil Copper Co.tt Concepcion del Oro, Zac. 

Mex . 4 

Mond Nickel C.) Coniston, Ont 3 

Mountain Copper Co Martinez, Calif 

Nevada Consolidated Copper Co McGill, Nev 1 

Nichols Copper Co I.ai:rcl Hill, N. Y 2 

Norfolk Smeltins Co Wr-st Norfolk, Va 1 

Old Dominion Copper Mining and Smelting Co Globe, -Ari2 ,5 

I 'rford Works. International Nickel Co Constable Hook, N.J... 2 

Penu Mining Co Campo .''eco, Calif 1 

Pioneer Sinelting Co Coram. Ariz 1 

Santa Fe Gold and Copper Co San Pedro, N. M. 1 

Shannon Copper Co Clifton, Ariz ;i 

.Swansea Consolidated Gold and Copper Milling Co. .. . Boutje, .Ariz 1 

Tennessee Copper Co Copperhill, Tenn 7 

Teziutlan Copper Mining and Smelting Co.tt T'-ziutkin. Puebla. Mex. . 2 

Cia. Metalurgica de Torreon Torreon, Coah., NIcx.. . . 2 

Tyee Copper Co.tt I.advsmith, B. C 2 

U. S. .Metal.s Refining Co , Chn.me, .\. J ■> 

U. S. Smeltint- Co.tt Midvale, Ut.-lh (i 

United \'erde Copp<"r Co Clarkdak, Ariz 4 

Wanakah Mining Co.. .. Ouray, Colo 2 

W.-stern Sm. ,t Power Co t Cooke, Mont 1 

* Raw ore smelted as flux, t Included in iiirnae<? tonnages, t Under constniction, § Penn. M 
per annum, hut only one is run at a time. ** .\o raw .irc chiirge^l. tt Nit in operation. 

ing November tli 



Capacity 
800.000 
90,000 



Annual 
Capacity 



800,000 
375.000 
250.000 
,750,000 
280,000 



630.000 
650.000 
912,500 
649,500 
1,020,000 
808,000 

450,000 

1,225.000 

132.657 

171,500 

350,000 

1,440 .000 

1,080,000 



175,000 
94,500 
140.000 
562,500 
94,500 
50,000 
60,000 
45.000 
,T(X),000 
190,000 
1,000,000 
3,->0,000 
175,000 
175,000 
200.000 
670,(KX) 
720,000 
105,000 



1,750,000 
339,000 
360,000 
52,500 



.Annual 
Capacity 
in Ore* 
t 
t 
t 
t 



486,500 
300,000 
153,000 
150,000 



33.500 
43,200 
35,000 
10,000 



S.OOO 
7,000 
28,000 
14,000 
7,000 
25,500 
22,000 



70.000 
40,000 



8,000 
15.000 



t 
36,000 
54.000 



. Co. hi 



verbe rat cries, each with capacity of 48.000 tons 



production exceeded 10.000.000 lb. 
The developments in tlic Juinbo mine were especially 
remarkable. On the 500-ft. level of this mine there is a 
.stope that averages over 70% copper for a widtii of 70 ft. 
All the ore from this stope is shipped directly to the 
smelters and returns between 1.350 and 1.500 lb. of 
(opper per ton. Some of the ore from otlier parts of 
the mine is first concentrated in a mill situated at a 
lower altitude, about three miles from the mine, with 
which it is connected by an aerial tramway. Construc- 

•Presldent. Kennecott C«tpper CorporatUin. New York. 



most cases the data have been communit^ated to the 
Journal by tiie operating companies. However, the fig- 
ures should be taken as only approximately correct. 
Some companies may have figured their annual capacity 
on the basis of the 3'ear of 3G5 days, and others on the 
basis of 350 days, or something else. Anyway, annual 
capacity is a rather variable figure. In modern practice 
a rather large quantity of ore is reduced directly to cop- 
per by charging it into the converter along with matte, 
this being sliowii separately in some cases by the last 
column of tbe table. 



[lu; 



THE EXGIXEEinXC; cr .MIXING JOURXAL 



Copper Frod^cttSoim aim Clhale 
By Pope Yeatman* 

During the first half of 1915 the nitrate industry was 
bv no means in a prosperous condition, many of the 
plants having been shut down in 1914 because of the 
Kuiopeau war, and others operating on reduced time. 
1 lining the second half of the year, however, the industry 
has been getting back to normal conditions, and the pro- 
liution is said to be equal to the average. High freight 
rates and difficult}^ in getting shipping of any kind have 
greatly interfered with shipments. 

The copper-mining industry was also at a low ebb 
during the early part of 1915, owing to general business 
ilc))ression and low prevailing prices of metal, high 
freights and restricted markets, the war having cut oil 
many of the European smelters having agencies in South 
America. Later in the year the high price of copper 
tempted the smaller producers to resume and increase 
operations. 

The smelteries at Catemou, Xaltagua, Chanaral, Cal- 
di-ra, Calania, Lota and Gatico have been running, the 
last especially wich a greatly increased production. The 
mines at Collahuassi also were operated. 

The Braden Copper Co. continued its operations and 
ruatly increased its production, the plant now being large 
enough to handle -4,500 tons of ore per day. Designs are 
iic'ing made for an increase to a capacity of 10,000 tons 
per day. 

The plant of the Chile Exploration Co., at Chuqui- 
lamata, was officially started up in May and is now on an 
operating basis. Actual construction was begun in 
.lanuary, 1913 — a little over two j-ears for building the 
plant, which is designed for the treatment of 10,000 tons 
of ore per day. Mining is by steam shovel, and the 
treatment consists of crushing to about a maximum of 
ij in., leaching with sulphuric acid and precipitation of 
> i)])per from .solution electrolytically. 

Work at the iron mine of the Bethlehem Chile Iron 
.Mines Co., at Tofo, consists of preparing for large pro- 
iluition and, for this purpose, especially in work on a 
landlocked harbor and docks. Considerable shipments of 
ore were also made. 

A great deal of work was done under the direction of 
William Braden in the way of prospecting, and prepara- 
tions are now being made to open the Potrerillos copper 
mine, situated about 90 mi. back of Chaiiaral. 



Copper Ps^oc^^ctaoira iia .A-razoiraa 

liv Walter DoiGLAsf 

Tiie restriction of production initiated in August of 
l!il4 continued in force until after the first quarter of 
I'M. 5, when, owing to the recovery of the metal market 
and the increased demand, operations were resumed on a 
normal liasis. 

In July, 1915, the Inspiration Copper Co. and the 
associated works of the International Smelting Co. at 
-Miami entered the ranks of the producers, and while 
maximum production was not attained during 1915, the 
I'utput served to offset in a measure the loss in production 

•Consulting engineer. Cliile Copper Co. and Braden Copper 
Co.. New York. 

tGeneral manager, Phelps, Dodge Sr Co.. New York. 



through the strike in tiie Clii'ton-Morenci district, which 
has closed down the mines of the Arizona Copper Co., 
the Detroit Copper Mining Co. and the Shannon Copper 
Co. since September. 

During 1915 the new smelting plant of the United 
A'erde Copper Co., at Clarkdale, was put into opera- 
tion, and being modern and efficient, it will permit 
of an increased production of copper from the mines of 
that company and an active participation in the custom- 
ore business of the northern part of the state. 

In the Warren district the Copper Queen satisfactorily 
concluded its concentration experiments and will shortly 
decide upon the plans for a commercial unit for the 
treatment of its disseminated and aluminous ores. The 
Calumet & Arizona continues to increase its output of 
copper at its Bisbee mines and, having completed the 
exploration of its Xew Cornelia propert\% is, in conjunc- 
tion with the El Paso & Southwestern Railroad Co., 
constructing a railroad from Gila on the Southern 
Pacific to the mines at Ajo. The treatment of the Ago 
ores involves an interesting metallurgical problem, in- 
volving the leaching of the oxides and carbonates and 
the electrical deposition of the copper from solution, and 
later, the concentration by flotation of the sulphides. The 
availability of the orebody for steam-shovel raining will 
serve to give minimum mining costs, the overburden be- 
ing negligible. 

Copper MaEaasa^ aiadl MeftaHHtuir^s'' 

aira ,A.rasoEaa 

By L. D. Picketts* 

During the last eight months of 1915 all the copper 
mines of Arizona were worked at full capacitj', with the 
exception of those of the Clifton-ilorenci district, which 
have been closed down by a strike since September. The 
works of the Arizona Copper Co., at Clifton, and of the 
Calumet & Arizona Mining Co., at Douglas, have been 
very successful in getting .satisfactory costs and savings. 
The new reduction works of the United Verde Copper 
Co. at Clarkdale, and those of the International Smelt- 
ing Co., at Inspiration, were blown in during 1915 and 
are in successful operation. All of these four large works 
are equipped with adequate crushing and sampling works, 
calcining furnaces, reverberatory furnaces and Great Falls 
type of basic-lined converters, 12 ft. in diameter. The 
Douglas and Clarkdale plants arc also equipped with 
blast furnaces. 

The striking features brought out in 1915 in the de- 
velopment of the copiier industry in Arizona lie in the 
continued and .successful efforts to obtain low unit costs 
and greatly increased savings in order to meet higlt labor 
costs, and at tlie same time to convert into great and 
profitable mines certain immense masses of mineralized 
rock that a comparatively few years ago were uncom- 
mercial. 

Power Plants 

The leanness of the ores in the new great mines de- 
mands great tonnages, and the necessity of a high re- 
covery demands fine grinding. As a consequence, the 
amount of power consumed is great and the generation 
of cheap power is a necessity. The tendency has been 



•Consulting engineer. 42 Broadway. Xew York. 



TITE E>;(;iNEEEINU c~ MIXIXc; .TOURXAL 



Vol. 101, Xu. 



toward the adoption of the steam turbine in compara- 
tively large units in a central power house, the genera- 
tion of electric current and the distribution of this cur- 
rent to mine, mill and smeltery for power purposes. 

The Inspiration Consolidated Copper Co., in con- 
junction with the International Smelting Co., built and 
])ut into operation during the year a new power plant 
containing three ~.500-kv.-a. steam turbines with acces- 
sories, and three reci]irocating converter Idowing engine-s 
each having a capacity of 1.5,000 cu.ft. of free air per 
minute and delivering the air at 1') lb. pressure. This 
])lant, which was designed and constructed l)y C. C. 
-Moore & Co.. is exceeding its guarantees aiul giving per- 
fect satisfaction. In the future, liowever. it is p;'ol)al)lc 
that the turlui-blowei', driven liy steam turbine or motor, 
will supersede the reciprocating engine. The contract- 
ing firm was in no way responsible for the adoption of 
the reciprocating engine. 

The introduction of the Diesel engine has Ix'cn re- 
cci\ing attention, and as American nianul'actureis de- 
velop this t\]w of engine and gain experience, it will 
doubtless be adopted in some of our |)lants. As long as 
tlie reverberatory furnace is used, liowever, the use of 
steam is obligatory, in part at least, in most central plants. 

illXIN'G ^fE'l'irODS 

In mining in Arizona, the dejiarture of the T»ay Con- 
solidated in ado]iting the sbiinkage system, devised by 
Mr. Cafes at Bingham and I^ay, is successful, and satis- 
fat-tory costs are being obtained. At the ^liami mine a 
part of the ore from the top of its great orebody is being 
top-sliced with a mattress, but its management is also 
adopting the shrinkage .system aud is obtaining very 
creditable costs. At Inspiration Mr. Mills has been 'sys- 
tematically developing the mine, and .Mr. McDonald, the 
underground superintendent, is introducing the Ohio 
system of mining, wliich is now in successful operation 
in a form modified to suit Inspiration conditions. In 
adopting the inclined raise, the extraction drifts are 
placed 100 ft. apart and the tramming .system is much 
simplified. Compressed-air locomotives are used under- 
ground instead of the trolley. The Hay o-ton car, which 
is a mere box on wheels, is used, and the ore is dumjied 
into pockets in three revolving tipples of the Ray type, 
but each taking live cars at a time instead of three. The 
two duple.x-dnim hoists, equipped with 12-ton skips, are 
electrically driven. They are coupled together and op- 
erated mechanically and alternately in iiaif-cycles. An 
Uglier motor-generator set furnislies the direct current 
i'or these hoists and e(|iializes the otiierwise heavy peaks. 
U|) to June last the Jns])iration mine ])roduced but TOO 
tons a day for its ex])erinienta1 mill. In June t\V() of 
the l.S sections of the mill were put in operation, and 
at tbe end of December 11 units were in o|)eration. while 
tlic remaining 7 units should be in o])crafion early in 
1 !)!(). Tlie mine lias easily respomlcd to the demand of 
tlie mill. In December over 210,000 tons was mined, 
and the management believes the iiniie can produce II,- 
000 tons of ore a day when the mill calls for it. If so, 
in nine short months tliis mine will have developed from 
a small producer into possiiily tbe largest single under- 
ground mine in point of tonnau'c in tbe world. 

Hy the use of either the slirinkage nietliod or the Ohio 
method of mininj,', there is necessarily some waste mixed 
witli the iiri'. \\itli tbe use of lloliition this does not 



\itiate the reco\eiy of the sulphides. While suih dilu- 
tion requires greater mill capacity for a gi\en output, 
besides the cost of milling such waste, the diminislu-il 
mining co.st will far more than counterbalance this and 
may even approach the cost of steam-shovel niiiwim'. 

The Flot.vtiox Pkooess 

Upon information furnished the Inspiration com])aiiy 
by the Minerals .Separation company, experiments lead- 
ing to the saving of copper sulphides by Hotation were 
begun about "Ji.'o years ago, and the success of this proc- 
ess has since lieen demonstrated. When the ratio of 
concentration of a given ore is very high, as at Inspira- 
tion, and a new mill has to Ir" built, jlotation becomes 
the major ]nocess and gravity i uuentration supplements 
it, but wiiere practicnily new and fine mills like thos.' 
at l'a\ and ^liaini are in operation or where the ratio of 
concentration is coiniiaratively low, as at Clifton, the 
gravity method may, or should be, the major process, 
and flotation should be supplementary. In the former 
case, as at Ins]iiration, tiie ore is crushed initiiilly in 
Maicy steel-ball mills to pass -tS-mesh. Tar and ot!n'r 
oils are fed into the ball mill, and the ])uli) pa.sses to 
flotation cells. Tlie tailings are divided into slimes, which 
are again treated by flotation, and sands, wiiich are clas- 
sified and passed to tallies. Tiie other large niills of 
Arizona ii.se ]irogressive crushing and gravity concentra- 
tion, and they have all done valualile and excellent woiic 
in the intiuiiuctioii of supplemental ])lants for the treat- 
ment of tailings by llotalioii. In some cases, .so far only 
slimes and fine sands are treated, but doubtless they will 
all come to regrinding the coarser sands to the neces- 
sary extent. 

The relative merits of the short tube mill and the 
Ilardiiige mill lia\e not been determined. Tiie short 
tube mill is gi\iiig satisfaction at Inspiratinn. 1 have 
no doubt that tiie Ilardinge mill will do equally good 
work, and it may possess some ad\antages. In either 
case the striking feature of the.se mills is their ability 
to take ore as coarse as a 1-in. cube and crush it to pass 
a 4S-niesh screen at one operation. 

Various types of flotation machines are in use in tbe 
West. The Callow machine, the Insjii ration machine (de- 
signed iiy Or. (laid) and the Cole machine rejiresent 
various tyjies of ]ineuniatic machines. The llebbard ma- 
chine of the ilinerals Separation Co., which retains the 
mechanical beaters but introduces comiiressed air under 
the im]iellers, also seems to gi\e gratifying results, 

OXIDIZKI) COI'I'KK Ol!K 

From 10 to 1")% of the total co|)per in our so-called 
clialcocite ores is in the form of oxidized coiiper minerals. 
Of the co|iper existing as sulphide, from !K) to !l2'/< may 
be recovered Jiy flotation, with ])ro]ier grinding, and only 
about ;!0^^ of the oxidized copper minerals are saved. 
I'lxiiei'iments indicate that certain compomids will per- 
mit of a high recovery by flotation of copper carlionates. 
I doubt if silicates will res]ioiid e(|iially. because such 
mineral is often disseminateil throiigli Ihe pores of the 
rock like ink in a blotter. 

There lias lieen a decided decrease in smeltinu costs, 
but this decrease has not iieeii as radical as the de<rensc 
in power, mining and milling costs, nor as im|ii>rt.int. 
for it applies only to a concentrated |iro(hict and not I" 
Ihe Iota! tomia'^e. Lar>rer units in calciiiers and fin- 



Januarj- 8, 1916 



THE ENGINEERING cr= ^FTXIXG JOURNAL 



naces, the electrostatic precipitation of dust aud capital 
expenditure to assure accurate sampling and cheaper 
handling charges are factors. 

The New Cornelia Copper Co., at Ajo, Ariz., now con- 
trolled by the Calumet & Arizona Mining Co., has a large 
tonnage of carbonate and silicate ores, containing about 
1.5% copper, which cap the sulphide ores and which 
may be mined by steam shovel with practically no strip- 
ping. After preliminary experiments, the company oper- 
ated throughout 1915 a test leaching plant of 10 tons' 
daily capacity. Using sulphuric acid as a solvent, from 
80 to 85% of the copper is dissolved when the ore is 
crushed to -l-mesh and treated by continuous upward per- 
colation in tanks having a column of ore from 10 to 18 
ft. high. 

Electrolytic Pkecipitation 

In order to recover from 0.9 to 1 lb. of copper per 
kilowatt-hour in the electrolytic plant, with hard-lead 
anodes, the ferric iron has to be kept under control by 
the use of sulphurous acid added in absorption towers. 
A neutral solution of copper sulphate and other salts ab- 
sorbs the gas more readily than an acid solution. Ex- 
periments in this electrolytic plant, with carbon anodes, 
air agitation and the use of sulphurous acid, confirmed 
the results given by Mr. Addicks in his most valuable 
paper, but experiments with this method at Ajo have 
not gone far enough to demonstrate with any degree of 
certainty that it can be used without serious mechanical 
difficulties, without displacement and loss of sulphuric 
acid by air, and without serious annoyance to the work- 
men from sulphurous-acid gas. 

The favorable results obtained in this test plant have 
led the company to decide to erect a leaching plant of a 
capacity of 4,000 tons a day. This development is very 
important because of the great quantities of lean oxi- 
dized copper ores at other places in Arizona. Inspira- 
tion alone has 18,000,000 tons of such ore, with possi- 
bilities of an even larger tonnage, and I understand that 
at Ray they have similar deposits. 

The success of the great so-called por])liyry mines in 
Arizona is the result of years of creditable work by able 
men. This year has showoi that a great mass of cop- 
per-sulphide-bearing rock, having a high ratio of con- 
centration, when favorably situated may be profitably ex- 
ploited if it contains 1% of copper or over, and the in- 
dications to me point with certainty to our being able 
to attack in another decade such complex ores of still 
leaner character. 

Ctalba aiadl Tirnimadlsidl ana 1^13 

The success of the ilatahamljre copper mine in Cuba 
stimulated prospecting throughout the island, and some 
small shipments were made from these prospects. The 
Matahambre mine in the Province of Pinar del Rio 
sliiijped about 40,000 tons, averaging over 12%, Cu ; the 
mine is now open to a depth of 300 ft. The Cuba Copper 
Co. finished the unwatering of its mine near Santiago 
Cuba and completed its 700-ton Minerals Separation 
notation plant; the company milled about (iOO tons daily 
jf :?% copper ore, 1)esides making monthly shipments of 
from 2,000 to 3,000 tons of 7% ore. Near Bayamo, 
M( Loughlin Bros, continued development work on a cop- 
per property and began the erection of a small smelting 
furnace. Prospecting was continued at the Carlotta py- 



rite mine, north of Cienfuegos, and wa- rommenced at 
another pyrite mine, the Antonio, at Minicaragua, Santa 
Clara Province. 

The ilidvale Steel and Ordance Co. announced in 
December that it had obtained control of 300,000,000 tons 
of iron ore througl* the purcha.se of the Buena Vista Iron 
Co. in northeastern Cuba. The iron-ore shipments from 
Cuba were as follows: Nodules from Felton, 296,407 
tons; raw ore, 4,617: Daiquiri, 245.088: Juragua, 187,- 
000; El Cuero, 65,930. The Cauto :Mining Co., a Rogers- 
Brown interest. shi]iped aljout 6,000 tons manganese ore. 

The oil coni])anies in Trinidad continued active ex- 
ploitation, the leading companies being the United British 
Oil Fields of Trinidad, Trinidad Lea.seholds, Ltd., and the 
Barber Asphalt Paving Co. The first comjjauy was ship- 
ping at the end of the year about double its former 
output. The Barber Asphalt Co., owing to difficulties 
in ocean transport, purchased a steamer in ilay, after 
which about 35,000 bbl. per month was shipped. Its 
asphalt shipments from Trinidad Lake showed a substan- 
tial increase over 1914, though European business was 
jiractically suspended. 

Si 

Stialplhtyiip Isadltuists'y nm 19S5 

Sulphur production in the United States in 1915 was 
probably the greatest in the history of the industry. 
Louisiana and Texas furnished practically the whole out- 
put, the former state su]ip]ying the major part of this pro- 
duction as heretofore. The Union Sulphur Co., at Sul- 
phur, La., maintained in 1915 its normal yearly output of 
about 375,000 tons, with four wells. In Texas, the Free- 
port Sulphur Co. added a third steaming plant at the. 
Bryan Heights dome and was producing at the end of 1915 
at the rate of aijout 300 tons per day : no figures of the 
year's output were ol)tainable from the company. No pro- 
duction except for local constimption was made in other 
states of this country, and the same was true of the other 
Americas. 

The sulphur trade in the United States was decidedly 
slack during the first half of 1915. but improved gradually 
until at the end of the year there was a brisk trade. Stoc-ks 
at the end of 1915, however, were greater than at any pre- 
vious time. The slack conditions in the paper trade in 
Tlie first half of the year reduced domestic consumption 
in 1915 to less than 300,000 tons. Export business was 
practically suspended owing to transport conditions, but 
late in tlie year the I'nion Sulphur Co. made two small 
shipments to Sweden and inirchased a 9,000-ton steamer 
preparatorv to resuming sliipments to some of its Euro- 
pean distributing stations. Prices remained practically 
stationarv in the United States, but the Consorzio, which 
controls the Silician sulphur sales, is reported to have 
laised its prices late in the year. Japan at midyear was 
producing at an increased rate. 

Hecirology 

Among the noted men identified with the mining and 
metallurgical industries who died during 1915 were tlie 
following : 

Birkinhine, John May 14 Hebgen, Max A»g. 24 

Derbv. OrWUo .\ Nov 27 Holmes. Jp*ph A July 1- 

Geikie, James Mar. 2 Martin. Pierre May -J 

Greiner. .\dolphe Nov. 20 .Sohnabcl. Carl Jan 7 

Guitennan, FrankUn May S S»-;»nk. James M June -1 

Hahn, OttoH July 26 Tropenas. Alexander July 14 



56 



THE ENGINEEIJING >> MININCi JOURNAL 



Vol. JOl, No. 



The production of lead in the United States again 
showed an increase in 11)15, the output of the refiners, 
l)oth from domestic and foreign source^, attaining an un- 
l)aralleled total of more than 600,000 tons. Tlie Mis- 
souri smelters turned out about 20,000 tons more than in 
1914, wliich means that tlie output of the Missouri mines 
increased in about the same ratio, inasmuch as this group 

PRODUCTION OF LEAD (REFINERY STATISTICS)* 
Donioslic: Class 

Desilverized 

Antini(;nutl 

.S. E. .Mis.s<mri 

S. W. .\li,ssnuri 



1912 


1913 


1914 


1915 


236,207 

9,239 

145,366 

19.224 


261.616 
16.345 

133,203 
22.312 


318.697 
17,177 

177,413 
25.448 


317.463 
24 ..370 
197.427 

2C.U!)li 



The exportation of lead of foreign origin is estiinatci; 
at 43,000 tons in 1915, compared with ;S1,051 tons in 
1914; and of domestic origin, 76,000 tons, compared witli 
58,T'22 tons in 1914. The total exportation of lead from 
the United States was therefore 119,000 tons in 1915, 
again.<t 89.7;5:3 tons in 1914. 

Tile imports of lead in OctolxT and the 10 inontlis end- 
ed Oct. ."51 are reiiortcd by tlie Ucpartnii'iit of Commerce 
as follows in pounds: 

October 



Totals 



Foreign: 
Desilverized . 
Antimonial.. 



Totals 

Gniiid totals 


87,718 .''>7.074 29,594 49.S97 
497,754 490,550 568,329 015.253 


* These fiRures include 
nelters. 


th.' lead derived from scrap and junk by primary 



of smelters obtains but little ore from elsewhere than 
Missouri. The lead product of Idaho ores was about 
175,000 tons, compared with about 155,000 tons in 1914. 
There was therefore an increase in the domestic output 
of about 40,000 tons from these two districts. It follows 
that some of the other lead-producing districts must have 
experienced decreases. In view of the fact that lead 
1914 



Lead in ore 

Lead in base bullion - 
Lead, pigs, bars, eti- 



3.I69.S93 

13.359..><.56 

16.605 



Ten Months 

15,24l).N.X 

SI, 651 .884 

768.843 



Total imports 16,.>16.354 97.(167..'>S1 

The weigiit of ore imported in Octoljer was 9,:!06 tons, 
chiefly from Mexico and Chile. The weight of bullion 
and base bullion was l;),'(()7,422 lb., nearly all from 
ilexico. 

ILead Maipfi^etl aim 1915 

First (Quarter — At the opening the price for lead was 
3.80c., New York. The .statistics .sliowing an increase of 
100,000 tons in the domestic production in 1914, in sjiite 
of the curtailment in the last quarter, was a great shock 
and caused the market to decline to 3.65(<j'3.70c. At 
1915 



JAN, FEB. MAR. APRIL MAY JUNE JULY AUG. SEPT. OCT. NOV. DEC. JAN. FEB. MAR APRIL MAY JUNE JULY AUG. SEPT. OCT NOV. DEC. 



Z 4 
UJ 



^^ 









UAb,~(AT~sT. 2oy7j7— --^t:: 




z 



JAN. FEB. MAi;. APRIL MAY JUNE JULY AUG. SEPT. OCT NOV. DEC. , JAN. FEB MAR. APRIL MAY JUNE JULY AUG. SEPT OCT NOV. DEC, 



1914 
LE.\D PRICES IN 1014 .WD Kilii 



1915 

-PLOTTED BY MONTHLY .WEKAGKS 



jniiiing was arbitrarily curtailed during the early part 
of 1915, just as it was in the latter part of IJIH, it is 
evident that tlie lead-producing capacity of the United 
States is in excess of tlie statistics reported for either 
yea i-. 

The imports of lead into the United States in 1915 
are estimated bv the United States (Jeological Survey 



:/::, 



Hept. 
Oct.. 
Nov. 
Dec.. 



MONTHLY AVERAGE PRICE OF LEAD 

New York . . .St. I.ouis . I.oriilon 

1013 1914 HI15 1913 1914 1DI5 1913 1914 

4 321 4 111 3 729 4 171 4 01 1 3 .MS 17 114 19. ('.(15 

4 325 4 04M 3 S27 4 175 3 937 3.718 lO.VlO 1".» dOli 

4 327 3 970 4 D.W 4 177 3 K.1() 3 997 15 977 19 (151 

4 3K1 3 81(1 4.221 I JIJ :i l.^^ 1.1 IJ 17 .'>',i7 IS 2:;5 

4 342 3.900 4.274 4 _'Ji. .'. Ml'^ 1 1-..' Is \i_'; Iv r.m 

4 325 3 !KX) 5 932 I I'm .; sm .-, ^:(i, .'ll Ji'i, |!i 111 

4 3.53 3 891 5 (>.->9 1 _'j.i ;i 7. is .", .•.:;i _>(i ii:is ui m:a 

4 (124 3 875 4 (>.'>6 4 '>rA) 3 il.'i 1 .'.2(1 2(1 KMi * 

4 (HIS 3 S28 4.(VU) 4 .579 3 (l.'.s I 491) 2<l 648 • 

4 Mrj 3 .528 4 («)() 4 253 3 3M 1 199 20 302 • 

4 293 3 (is:i 5 1.-.5 4 14(1 3 .5x5 5 (17S 19 3:»4 18. .500 

4 (117 3 sttO 5 3.55 3 929 3 (M12 5 2fi(i 17 798 19 0<»7 



1915 

18 606 

19 122 
21 883 
21 (191 
2(1 317 
25 170 
24 (111 
21 9411 
23 151 
2.3 994 
2(1 27.S 
28 807 

Year 4 370 3 802 4 628 4 238 3 737 4 567 18 743 22 917 

Ni;w York ami St. I.<nii!i, eentu per pounrl Loiirloii, pounds sterlinii piT loiiit 
ton. * liondon ExelmnKe elowtl. 

at D,025 tons in ore, 50,825 tons in base bullion and 100 
toii< in scraji, a total of 60,850 tons, compared with 
2S.:{;t8 tons in 1914. Of tlie imports in 1915 about 58.- 
000 t'Mis came from Mcyico. a'.'aiiisf 2:!.1 II Ions in 191 !. 



that ]nice .<ome rather large sales were made, and abmit 
the end of January the market advaiucd to :!.80c. Dur- 
ing February and the early part of March there were no 
features of s])ecial interest. On .Mar. 15 .some very large 
.-^ales for exjiort were made, and on .Mar. 1(> Ibc American 
Smelting and Keiining Co. was led to a(hance its price 
to 4.10c. The price of lead in London was far above our 
jiarity. but the ditliculty of linding freight rcom kept tlie 
English and American markets ii\niv\. The dilferential 
between New York and St. Louis prices was much 
less than ordinarily, owing to the sales that were beiii',' 
made for slii)iinent Irom St. I^ouis to j'lurope thrtuigli 
(iiiir ports. All estimate of the domestic coiisuiii|)ti(Mi 
of lead at this time was about ()59f of normal. During 
the la<t week of March large sales were again made, and 
the market advaiici^d to I.15(r/ 4.2()c. New York, and 
4.10if/1.20e.. ,St. Louis. 

Second (Jiiarter — During April lead was steady at 4.20 
((Vi4.25e., New ^'ork. in May inquiries for military pur- 
poses began to excite .some interest, but the supi)ly of lead 
appeared to be amiile. and the market exhibited rather a 
.'^ofter tone, tlierc being appareiitlv a tear Ibat any iii.i- 



Januai\ t^. IIUC 



i-;.\"(;i.\KKiM.v<. 



MIMXii .JOlilNAI 



terial advance in Hk' jn-ice would give too great a stimu- 
lus to production. Toward tlie end of .May, liowever, a 
larger infiuiry from ammunition nianufaeturers devel- 
oped, and on ^lay 25 the Ameriean Smelting and Kedn- 
ing Co. advanced its price to 4.:30e., New York, which 
took most of the. other producers by surprise. This 
started a spectacular advance in tlie price for lead. On 
May 27 the quotation was 4.40c.; on June 1, 4.90c.: on 
June 12, 7(5 8c. ; on June 15, 6%(VVTV4c-; on June 22, 
5-%i<( 5-V.'tC-. The advance was well founded. Curtail- 
ment had i-educcd the supply to a greater extent than was 
supposed, and on the other hand the requirements for 
jeail had increased to a greater extent than was supiiosed. 
Into this situation a powerful speculative clique injected 
it.<elf. Several days in advance the tip was circulated in 
Wall Street that lead was going to 6c. or higher. Of 
course this intlanied buyers, who feared a repetition of 
what had happened in spelter. At al)out fie. producers 
made very large sales, some of the largest transactions in 
lead ever recorded^] 0,000-tou lots and such — being made 
at tliis time. As the market rose further, the volume 
of transactions dwindled, and al)ovc Tc. was relatively 
small. At 8c. the speculators tried to liquidate, but 
found that there were no iiuyers. The market simply 
melted away under their feet. The producers took a 
-tand at 5%c. to stay the decline, but they did not re- 
L'ain control of the market until all the speculative lead 
had been liquidated. That appeared to have been accom- 
l)lislied about the end of June, at which time the mar- 
ket rallied and became firm at 5%c. 

Third Quarter — During July the market was dull and 
narrow, but throughout the month there was some shad- 
ing of prices, and toward the close the American Smelting 
and Refining Co. made several sharp reductions, which 
brought the market down to 4i^c. aiwut the mitldle of 



August. At this level buyers evinced interest and placed 
some large orders, whicli cleared the atmosphere. An 
increased demand then develo])ed, and bii^inr prii • - v,,re 
willingly paid. By the end of August tiie market liad 
recovered to alwut -l.'Miti He. Following this there was 
again a recession of price, the market standing at 4.50c. 
at the middle of September, and at the same price at the 
end of the month. 

Fourth Quarter — Lead reniained at about 414c., Xew 
York, until Oct. 21, when the American Smelting and 
Kefining Co. advanced its price to 4%c., this having been 
justified by the considerable volume of business done 
during the month. Continued large bu.siness led to an 
advance to 4.!/0c. on Oct. 21), to oc. on Xov. 4, to 5.15c. 
on Xov. 10 and to 5.25 on Xov. 15. About the end of 
Xovember the market began to exhibit a .«tiffer tendency, 
but the American Smelting and Refining Co. did not 
raise its price, mystified by which independent producers 
became free sellers and the market turned distinctly 
easier. On Dec. 14 the American Smelting and Refining 
Co. unexpectedly rai.<ed its price to 5.40c., Xew York, 
and the market then became more active. At the close of 
IDIS lead stands at 5.50e. The consumptive demand is 
large, and the unsold stocks in the hands of producers 
are believed to be verv small. 



Wfiaafee I^esidl asao 



)s£idles aim I'^li 



Prices of lead pigments lluctuatcd more violently and 
reached a higher level during the last six months than 
at any other period since commercial conditions bei-ame 
normal after the inflation during and following the Civil 
War. The indirect influence of the European War upon 
pig lead, and speculative operations in that connnodity, 
cau-cd a rapid advance during the latter part of May 




rUINX-lPAl. LEAU-JIINIXC UUSTRICTS. SMEI.TI.\0 VVoKKS AND KEFIN El; I KS IN THE INITEK STATES 



58 



THE EXGIXEERIXG or= [MINING JOURNAL 



Vol. 101, No. 2 



:in(l resulted in a rise of over ^lAc per 11). before the 
middle of June. As a consequence, white lead in oil, 
which had remained at 6%c. from Nov. 1913, to June 
1. 1915, was advanced on the latter date to 7e., with 
further advances of 14c. on the -Ith, i/^c. on the 7th and 
Ic. on the 9th, making the price on that date 8%c., or 
2c. per lb. above the figures that liad ruled for more 
than 18 months prior to June 1. 

A break in pig lead was promptlj- followed on June 
22 by a reduction of Ic. in the price of white lead m oil, 
and subsequent reductions brought the price back on 
Aug. 19 to the level of June 1. 6%c., thus covering an 
advance of 2c. per lb. and an equal decline in 21-2 months. 
Since the last-named date there liave been two advances, 
following pig lead, and at the close the minimum price 
is Ti^f- Tli^ frequent 1 hanges have had a more or less 
disturbing etfect upon business, which was restricted by 
the extreme advance, but the sales for the year have been 
in excess of 191-t and reflect a heavier domestic consump- 
tion, as well as a considerable export business with the 
Latin-American markets. 

Dn,- white lead has not followed closely the fluctua- 
tions recorded for lead in oil, but from an opening fig- 
ure of 5c. there was a gradual advance to oVljC during 
the first half of the year and in June corroders made 
a 7%c. price as a safeguard against the uncertain future 
of pig lead. With the sub.^equent decline in the latter, 
dr}' lead settled back to a (ic. basis, but subsequently ad- 
vanced to (iVtC, which is the quotation at the close, 
but with guarded selling on contracts running into next 
year. 

Oxides were weak at the opening of the year and only 
began to stiffen up in April, wiien the pig-lead market 
showed a veri' positive advancing tendency. Red lead at 
that time advanced to 6c. and Gi/^^'- from an opening 
of 51/^c. to 5-''4c. and in the June rise went to SYxC, 
after which there was a gradual decline to G^^c. in Sep- 

A. S. & R. CO. PRICKS FOR PIG LE.\D 
\cw York I5clivcT>- 
(In Cents per Pound) 



Opening 


3 SO 


June 


4 


... 5.29 


Aug. 


10 


.... 4 .50 


Jan. 12 


.... 3./U 




7 


.... 5 50 




25 


.... 4 60 








8 

10 


.... 5.75 
.... 6.25 




26 

27 




Feb. 15 


3.85 


4 90 


Mar. 1 


.. . 3.90 




11 


.... 6.50 


Sept 


9 


.... 4 70 


•' 5 


... 3.95 




12 


.... 7.00 




14 


.... 4 50 


•• 17 


4.10 




17 


.... 6.25 


On. 


22 


.... 4.75 


"24 ... 


.... 4.15 




18 


.... 6.00 


" 


29 


.... 4.90 


Anr. 1 .. 


.. . 4 20 




19 


.... 5.75 


Nov. 


4 


.... 5.00 


-Nlay 21 


4 30 




21 


.... 5 00 




10 


.... 5.15 


■• 27 


.... 4 40 




26 


.... 5.75 


*' 


15 


.... 5.25 


•• 28 . . . 


.... 4.50 


July 


30 


.... 5 50 


Dre, 


14 


.... 5 40 


•• 31 

June 1 


.... 4 75 
.... 4.90 


Aug. 


2 

7 


5 25 

.... 5.00 




31 


.... 5 50 


3 


.... 5 00 




9 


... . 4.75 









tember, with a subsequent gain of 14c. in November and 
again in December, making tlie minimum price at the 
c]o.-;e 7c. Litharge has followed a similar course, open- 
ing at 5c. and advancing in June to Sl/tc, but later re- 
acted and in 8epteniber was down to Gc, with subsequent 
advances to Gi/.c. at the close. 

Very little business was done in any of tiie.-^e products 
at the extreme figures, which were established more as 
a precautionary measure while the course of pig lead was 
so uncertain. Even now the market for all lead pigments 
is sensitive to fluctuations in the metal, and at no time 
since the June advance have manufacturers felt justified 
in guaranteeing prices for any long jieriod or entering 
into contracts that were not fairly covered l)y the material 
they had in sight. 

While the export outlet for all lead pigments reached 
increased proportions during the year, manufacturers still 



regard this business as one of doubtful })ermanencv, al- 
though there are gratifying evidences that on an even 
price basis a large share of it could be retained against 
any foreign competition. 

The cost of linseed oil has had a strengthening effect 
on the price of white lead in oil throughtout the year. 
having advanced steadily from an opening figure of 48c. 
per gal. to Goc. in ilay, with fluctuations between that 
figure and GOc. since, about (i2c. beini;' the closing fisrurc 



By S. W. Eccles* 



Le^aco 



The American Smelting and Refining Co. operated 
most of its mining properties in the northern part "' 
Mexico until September, 1915, at which time operation- 
were suspended ami the American and foreign employees 
were withdrawn to the L'nited States in compliance with 
a request made by the L^'nited States Government. 

At Santa Eulalia the scale of operations was almost 
nonnal. At Santa Barbara mining and milling wer. 
increased to normal basis. At Velardefia the CopjH 1 
Queen and Teneras mines were operated. At Siena 
.Mojada the mines were worked on a reduced scale, li 
the southern section of Mexico, the Angangueo aiiii 
Tepezala properties were operated on a reduced basi~. 
The production has been stocked on the surface pendiiiL; 
reopening of railroad transportation. 

No work was done at Charcas or at Matehuala durinv 
1915, owing to the almost complete interruption of rail 
road .service. From the Bonanza, Zaragossa and Reform:! 
]U-operties some .shipments were made. Railroad con 
ditions are improving somewhat, so that operations ai 
the properties situated in the central and southern 
districts may shortly be resumed. 



The accompanying list gives the .several silver-lead 

smelting works of the United States, ilexico and Can- 
ada, together with the number of their furnaces (in all 

AMERICAN SII.YER-LEAD SMELTING WORKS 

Fur- Annual 

Coinpan}- Place naoos Capacity i < 

American Smelling and Re6ninK Co Denver 7 510.(M" 

Amcriciu Snieltitip and R''(ining Co Pueblo 7 SSO.O* '■ 

American Smelling and RcSning Co Durango -1 210,m'«t 

American Smcltins and Refining Co Leadville 10 SlO.lHKi 

American Smelting and Refining Co .Murray 8 657,(«in 

.American Smelting and Refining Co East Helena 4 300,()0o 

American Smelting and Refining Co Omaha (t) 2 S2.(«i 

.\merican Smelting and Refining Co Chicago (t) .. . 1 3(i.omi 

American Smelting and Refining Co Perth Amboy (t) 4 170.ti"i 

American Smelting and Refining Co El Paso 6 3S0.1H'' 

.Selbv Smelling and I.f ad Co Selby 3 210.11" 

ni,i„ & C'olorado Smelting Co Salida, Colo.. 4 31.';.'ii. 

Uiiilid Stales Smelting Co Midvale, I'tah 6 500.(li« 

NcihU.m Smeltine Co Needles, ( al. (t) 2 70.1* H' 

Nortliporl Smelting and Refining Co Northporl.V^ ash 2 ^ 

Pennsylvania .Smelling Co Carnegie, Pa. . . 2 60.0(Hi 

Intel national Smelling C:o Tooele. Utah. 5 .52S,0(Hi 

Totals, I'nilcd .Stales 78 4.9')l,ri" 

American Smehing and Refining Co Monterey 10 .'i.vi.iu" 

American SmcllinR and Refining Co Agu.iscafientes.. 1 40,lli" 

American Smelting and Refining Co Chihuahua.. . 7 lUO.lH" 

American SmelKrs .Securities Co VelardeiSa 3 l.W.ODu 

Compafiia Melulurgica Mexicana San Luis Potosi 10 2.-i0.(Klu 

Compafiia .Melalurgica de Torreon Torrcon S .iHU.Olin 

CompaAia Minera du Pcfioles Mapimi (t) . . . . 6 325,1)0' i 



TolaU, Menico 

Consolidated Mining and Smelting Co. . . Trail, R.C 4 

♦Toiu* of charpe. t Smelt chiefly refinery betwe<'n-pro<hiciw 
aled in 1914 and 1915. § Plant being remodel.il. 



2,109,1)111 

140,1)111 

t Not oper 



•Vice-President, American Smeltlns: nnd Refininf? Co., Now 
York. 

tCorrectpfl to" Dec. 1, 1915. 



.hiiiiuirv s, i;)ii; 



TiiK i:x(.i.\i;ki;i\(; o- mixi.nc j(M'i;x.\l 



cases, l)liist fiiniiiccs) and their estimated annual eapaeity 
in tons ol' eliarfic. F>y "tons ol' eliargu" is meant ore and 
flux, Init not coke. Tlie ton ol' charge is niaiiifestly 
the correct nnit. In the ease of a self-fluxing ore, the 
ton of ore smelted and the toll of charge smelted is the 
same thing. In other lases fnel and lahor ha\e to he 
used ill smell iuL; the lhi\ as well as in smelling; the niv, 
and the ecoiiumy ol' smelting depends largely upon the 
]ierceiitage of <jre in the charge. The iiianagement of 
this questiiin is about the highest exercise of the nietal- 
lurgisfs skill. 

The ligures in the accom|)anying lahle are in most cases 
from ollieial communications of the respecti\c ccun|iaiiies. 
Ksliniated capacity is, li(i\ve\er. always a matter of more 
or le.ss uiieertaiiity, and for this rcasun. if for no other, 
the (ignres gi\eii (Uight to he ac<-epted only as ai:)|)roxi- 
mations. The figures have heeii coi-rected from last year, 
hut the totals remain aljout the --aine. There was in fact 
no new construction of consecpicnce in tDlo. The Xorth- 
port. Wash., ]ilant has heen taken over hy the Hercules 
interests and is being remodeled, and liuidsci' Hill & 
Sullivan expects to huild a new plant in IDlCi, so that 
lead-sniclting capacity will soon he malei-ially increased. 

The total capacity of the Mexican works is a little 
over 2,000,000 tons per year; of the American works, 
a little over 4,800,000 tons. With respect to the American 
works, at least, such ea].)acity has never heen in use at 
one time. More or less of it represents capacity that has 
Ijecome idle because of changes in the conditions of ore 
supply. 



insso^ra 



By II. A. Wiii:i:i,Kii* 

The Southeastern, or disseminated-lead, belt of Mis- 
souri })roduce(l about HSjOOO tons of pig lead in 11M."J. 
This maintains the long, almost unbi-oken record of the 
coiitinuous growth of this district, as last year's output 
exceeds the previous high record, iii- that (if li)l 1. hy about 
15,000 tons, (.r D^,. The bumpci' ])nHliicli<)n last year 
is especially noteworthy, as thei-e was a markeil cur- 
tailment during the first part <if the year, when the lead 
market was very low, or less than Ic. ]iei' lb. in St. Jjouis. 
With the improvement in prices that took place in April, 
the district tuned up to fidl s|iccd and bnished the \ear 
under full pressure and givat acti\ity. 

SI. Francois County jjn.iduccd nearly 'J't'/, oi' the out- 
|iut of .southeastern Jlissouri in 11(1.") fi'om the mines of 
the St. Joe, Federal, National, Deslogc and Uakei' lead 
companies in the Bonne Terre, Big River and Flat Kiver 
districts. These mines all produce from the deeji, low- 
V.rade, large disseminated dejiosits that occur at de]iths ef 
100 to fiOO ft. in the "Bonne Terre" limestone. The 
numerous shallow digijjings that wi'rc worked a century 
ago were aba.ndoned :)0 to 10 years ago in St. Francois 
County and were always small ju-oducers ; they have 
proved invalu.-iblc, however, to the modern ])ros]ieclor in 
indicating where to drill for the deeper disseminated 
leiul: for the relation between flic shallow lead and the 
deep dis.seminated deposits has ]n'o\('d most intimate in 
St. Francois and Madison Counties. The shallow dig- 
gings in Washinirton County, which adjcu'ns St. Francois 

•Mining enslnecr, 510 Pine t^l., St. Louis. JIo. 



on the west, did not produce much lead in lOl'j, nor 
did Franklin County to the north. .lelfcison C<iuntv, 
which is immediately north of St. Francois County, has 
a few slialhjw diggings that coiitaiii both lead and ziiu-, 
and under the stimulus of the liigli zinc market in ]!»1."> 
produced a limited amount of zinc carbonate and galena. 

Xinv PiiOsi'KcTiNG its .\ Big S( .m.i: 

The L;ieat iiii[)rovenieiit in market conditions stinuil- 
lateil ciinsiilerable prospecting in the last half of the year. 
The (jperators are hegiiining to realize that desirable uii- 
absorbed bind in St. Francois County is steailily diminisii- 
ing and that it will not be long before they will have to 
cross the line into Washington County to maintain their 
fiitiirc (u-e reserves. While the drilling will be deeper. 
slower and more costly, or to depths of .500 to 1,200 ft. at 
$!.<!•') to ^].]') per ft. in Washington, as compared with 
200 to (;()0 ft. at 50c. to ij;] per ft. in St. Fraiu'ois County. 
it is low when compared with dianiond drilling in other 
milling districts, where •$"<! to $5 per ft. is the usual range. 
That Washington County is likely to eclipse St. Francois 
A\itliiii the next 20 years or less is quite probable, if the 
most lelinlile guide to successful prospecting in St. Fran- 
cois ami .Mailison Couutie.s — shallow lead diggings — also 
holds true in Washington Cc/unty. For the shallow dig- 
gings ;ire much richer, more numerous and cover larger 
areas in Washington County than in St. Francois, unle.ss 
the county line should pro\e to be a di.s.seniinated-lead 
dam. The couiitv line did not prevent .some of the sur- 
face-lead deposits from slo]ipinir over from Washington 
into St. Francois County, yet tlu^ average native, as well 
as some "liighci- up" is cominced that it trapped all the 
disscininate(l-lead solutions ainl ]ii'evented them from 
makiin;' similar deposits in A\'ashington County under 
identically the same ge(dogical conditions as occur in St. 
Francois County. 

One l^astcrn syndicate is already ]iros])eeting near 
Ii'oiidtilc, ill the s(uitheastei II part of Washington County. 
where it has optimied coiisiiliTidilc land that was .secured 
by II. .1. Cantwcll, tlie »etciaii mIio successfully unearthed 
several deposits in the Flat l,'i\ei' district. 

A St. Louis syndicate is also drilling lu'ar I'otosi, on 
ihc. eastern side of Washington County, where an eiieour- 
ai'iiig core of disseminated lead was obtained in 101.'! at 
depths (d' 827 and 9:!0 ft. 

The llotatiiui jnocess is making further headway in re- 
co\'ei'ing the lead from the slimes, and it has been adojited 
by all the larue mills. In fact, the recovery of the for- 
ineily lost lead has made such ]irogrcss that further ]iol- 
liitioii of Big Biver, into wdiich all the St. Fraiu-ois 
Ciuintv slimes finally drain, is no longer considered prob- 
able, and Ihe old damage suits. have been .settled on this 
basis. 

Tlie labor situation has been very satisfactory through- 
out the dislvict during the ]iast year, as there have been 
pleiit\ (d' men and no strikes. When the price of lead 
took file sIkiiji u]iward turn, there was a clamor for higher 
wiiLiX's that resulteil in giving the men a bonus of SSc. 
per day, which is still continued, although the price of 
lead has considerably receded. 

St. Fii.wcois Corxrv 

The St. Joseph liCad Co. had a most successful year in 

1015 under its new regime and made by far the largest 

(uitiuit ill its long, highly suece.s.sful career. This was 

mainly due. liowever, to the absorption of the Doe Run 



60 



THE ENGINEERING &- MINING JOURNAL 



Vol. 101, No. 2 



Lead Co., with which it ha.« always beeu closely affiliated 
and which was taken over by tlie parent company in 191-i 
on a stock basis. Ten shafts were operated that fur- 
ni.*hed the ore, via the Mississippi River & Bonne Terre 
R.R., which it owns, for the old 1,500-tou mill at Bonne 
Terre, for the 1,500-ton mill at Owl Creek (on Big- 
River) and for the 4,000-tou Doe Run mill at Rivermines, 
in the Flat River district. The original mine at Bonne 
Terre, which is nearly 50 years old and was the first dis- 
seminated mine in the district, is still a large and active 
producer. The smelter at Herculaneum, on the ilissis- 
sippi River, was further improved and can now treat 12,- 
000 tons of concentrates per month with a high efficiency 
as regards recovery. The Peugnet tract at Bonne Terre 
has been optioned at $1,000 per acre and is now being 
drilled. 

CiiAXCEs IX St. Joe Staff 

There have been many changes in the local management 
during the last year, including the death of Roscoe Par- 
sons, former general manager, and the retirement of 
0. M. Bilharz, who is now identified with zinc mining 
in the Joplin district. Mr. Bilharz was superintend- 
ent of the Doe Run company for over twenty years 
and later of tlie St. Joe conii)aiiy and the designs of the 
new mills at Owl Creek and Rivermines were executed in 
his office. The death of Roscoe Parsons removes the last 
of the Parsons from Bonne Terre, an attractive, model 
mining town that owes its existence and development to 
this family. For it was his father, Charles Parsons, the 
first superintendent of tlie St. Joe company, that finally 
made a success of tlie enterprise after years of strug- 
gling with poverty and technical difficulties, and on his 
succes.sful retirement in later life, he was succeeded liy 
his oldest son Roscoe, whose untimely death occurred 
last summer. 

The Desloge Lead Co. pursued its usual ]iolicy of 
quietly pushing production to its top notch and main- 
taining its plant in excellent condition. It operated three 
.shafts that supplied its l.GOO-ton mill on Big River at 
the town of Desloge. While most of the concentrates were 
shi])|)ed to a custom smelter in the East St. Louis district, 
its small ])lant of Fiintshire or air furnaces at Desloge 
were kept in operation, as usual — a type of smelting tin's 
company has tenaciously adhered to, at least on a mod- 
erate .'^calc. This company operates its own railroad be- 
tween tlie scattered .•shafts and mill, which connects with 
the Mississi;)pi River & Pxmne Terre R.R. at Desloge 
.station. 

The National Lead Co.'s mines are at St. Francois sta- 
tion, ill the Flat River district, where it operates four 
shafts on a c()iii])act body of land that is equipped with 
an excelieni 2,000-ton mill. A central rockhouse situated 
near the mill is employed, to which all the ore is hauled 
from tiie scalfered shafts by an electric trolley system, the 
only one used in the di>trict. All the ore is sampled and 
wuiglied berr)re it is milled, and all of the mill products 
are sampled and assayeil, thus giving complete informa- 
tion as to the actual work of the mill. The concentrates 
are shijiiied to the National comi)any's large smeltery at 
CoUinsville, III., which also does custom work. The 
plants were run at full capacity during ]!)15 and turned 
out the largest output in their history. Options were 
taken on con.siderable St. FraiH'ois County land, which 
is now being drilleil, and several triicts were purchased. 



The Fedeial Lead Co. operated seven shafts in 101 -"i 
on its very extensive property in the Flat River district, 
from which tlie ore is hauled by its own railroad to a 
central rockhouse and 4,000-ton mill on the land acquired 
from the old Central Lead Co. To appreciate the mag- 
nitude of its operations and to realize the difficulties oi 
wasting such a heavy tonnage of resulting tailings, om 
has only to glance at the huge pile — or rather, younu 
mountain — of tailings that has accumulated in the short 
life of this mill, which is the largest in the district. Al- 
though advantage was taken of a draw or gentle vallc\ 
near the mill in which to dump the tailings from a high 
wire-rope tramway, this was soon outgrown, and now a 
rubber-belt conveyor set at a high angle is employed, to 
which "dummies," or extensions, are built as "Mount 
Federal"' enlarges. 

A new shaft. No. 12, was started last August that 
will be 460 ft. deep. It will be equipped with an electric 
hoist that will operate two ii/o-ton skips. The concen- 
trates are shipped to its large smelting plant at Alton. 
III., which ojjcrates on the open-hearth and baghouse 
principle and also docs custom work. 

New Bostox Interests Activi: 

The Baker Lead Co., of Boston, succeeded the St. 
Francois Lead. Co. in the ownership of the old Jake Day 
land on Big River. This is a tract that was peddled on 
the market for years, and almost every ojierator in the 
district has ojitioned it and turned it down, after more 
or less drilling. Boston interestes finally took it over at 
about $1 ,200 an acre on the strength of the previous drill 
records and sunk a shaft on the edge of Big River. It 
opened up one of the richest orebodies in St. Francois 
County, as mill runs for month after month on careful 
sampling assayed from 8 to 11% lead, as (•ompared with 
a district average of '^ to 0%. The company has no mill, 
and the ore is being treated under a long-time contract 
by the National Lead Co., with whose mill it is connected 
by a spur of the Mississippi River & Bonne Terre R.R. 

The Baker company recently acquired the "Jones 
Forty."' a 40-acre tract lietwcen the old Central and 
Derby lands at Elvins, that is claimed to be very rich. 
At tiie reported price of $100,000, or $2,500 per acre, 
this is the highest price yet paid for drilled but undevel- 
oped farm lands, as the previous high was $1,500 an 
acre. This property sold 15 years ago for $6,000, or 
$150 an acre, when it was undrilled, although within a 
mile or so of good mines. A shaft has been started that 
will be 625 ft. deep, one of the deepest in the district. 

Madison County 

The Mine la Motte Co., which operates the classic lead 
mine of America, had an active year and made the 
largest output in its history. Since the present coni- 
]>any took h(dd two years ago, it has adopted several 
original ideas, the most important of which is to rework 
the shallow diggings with steam shovels, in milling which 
there is (|uite a recovery of carbonate of lead. The dis- 
seminated orebodies are also being actively worked. 

The Phienix mine, formerly known as the Catherine, 
was reopened last s])riiig and is again being worked under 
lease by the Federal Lead Co. The adjoining Fleming 
tract is also being worked, as the Catherine orebody ex- 
tends into Ibis land. The North American mine, at 
Fredericktown, is still closed down, and its costly smeltery 
is sadlv siilfi'iiML.' rroiii disuse. 



.laiiiiarv S, I'JIB 



THE KN(;iXKKI.M.\(; o- MJXlXi; .JOllJXAL 



61 



.iimc 



The ))r()(lii(tioii of sjielter by ore .smelters in the I'liitcd 
States was 4'J2,4!)5 tons in 1913, compared witli 'Mi'Z,'->(M 
tens in 1914. This includes the spelter derived both from 
domestic and foreign ores and also a small tonnage ob- 
tained from dross, etc., by smelters whose chief business 
is the reduction of ore. It is to be noted that there is 
also a rather large production of spelter by dross smelters, 
pure and simple. Their production is not included in 
the present report. 

The total reported for 191.5 is the aggregate of the 
reports of 32 smelters operating 42 works. So far as we 
know, these were all of the smelters who produced in 
1915; but in view of the starting up of new works like 
mushrooms, it is possible that one or two new concerns 
escaped attention. The list of the zinc smelters, together 
with the number of their retorts at the end of 1915, is 
given in an accompanying table. 

In reporting their production, all of the smelters gave 
their output up to Dec. 15, together with their own 

SPELTER PRODrCTION IN 1914 AXD 1915 BY QUARTERS 

(Reports of Ore Smelters Only) 

(In tons of 2,000 lb.) 

1914 

District I II III IV 

Illinois 

Kansas-Missouri 

Oklahoma 

Others (*) 



Illinois.. 
Kansaa-Missouri . 

Oklahoma 

Others (*) 



31.003 
13,9.-?9 
22.563 
20.700 


32,482 
14.639 
22,960 
20,703 


32,512 
13,193 
22,943 
21,819 


34,388 
11,633 
23.999 
22.661 


88,207 

1915 
3S,748 
13,807 
25.213 
23,268 


90,801 

40,062 
24,568 
26.984 
27,217 


90,469 

42,084 
31.921 
28,603 
28,028 


92,881 

44,275 
40,007 
29,602 
31,108 



Totals 98.036 118.831 130,636 144.992 

(*) With the exception of one plant in Colorado these are all Eastern works. 

In the fourth quarter ot 1915 is included .\naconda production. 

PRODUCTION OF SPELTER 

(In tons of 2,000 lb ) 

By Ore Smelters 

States 1911 1912 1913 1914 1915 

Colorado 7,477 8,860 8,637 8,152 .8,881 

IllinoU 88,681 94,902 111,5.51 130,587 162,169 

■' ■ 85,157 53,424 110,303 

83,230 92,467 110,402 

69,687 77,731 100.740 



Missouri-Kansas- . 


106,173 


111,761 


t)klahoma 


46,333 


76,837 


East ... 


47,172 


56,278 



Totals 293,8.36 348,638 358,262 362,361 402.495 

otimate for the remaining fortnight of the year; but 
tt) a large extent the reports came by telegraph after the 
end of the year, and con.sequently represent the actual 
output without any estimate. 

All of these smelters reported their production by 
quarters, which figures are summarized in a separate 
talile. That table shows how the output increased quarter 
l)y quarter. In the last quarter of 1915 the zinc smelters 
of the United States were producing spelter at the rate 
of 580,000 tons per annum. 

It is a fair assumption that all of the retorts listed 
were in use at the end of 1915, excepting such small 
proportion of them as were necessarily cold for repairs. 
At the end of the 3"ear tiiere were new retorts under con- 
.struction by the Edgar Zinc Co. at Donora, Penn., the 
L.I Harpe Spelter Co., and the Oklahoma Spelter Co.. at 
Kusa. Okla. ; the Henryetta Spelter Co. at Henryetta. 
Okla., the American Spelter Co. at Pittsburg, Kan., the 
American Zinc and Chemical Co. at Langeloth, reiin., 
the Bartlesville Zinc Co., at Collinsville, Okla., the Rob- 
ert Lanyon Zinc and Acid Co. at Hillsboro, 111., the lola 
Zinc Co. at Concrete, Kan., United States Zinc Co. at 
Sand Springs, Okla., and several others, to the number 



«( 'ii.'i'M. In addition to this an electrolytic plant de- 
signed to produce .{5,000 tons of .spelter per annum was 
under construction at (Jreat Falls, .Mont. 

The stock of spelter at works on Dec. 31, being the 
aggregate of the reports of all the smelters, was 14,300 
tons, compared with 23,500 tons at the beginning of 1915. 
These figures include both high-grade and common spelter. 

The exports of spelter in 1915 are estimated at 128,000 
tons, compared with about 70.000 tons in 1914. 

Spelfteip MsiS*Mell im 1913* 

First Quarter — At the beginning of 1915 the price for 
spelter was about S.fiOc. The publication of the statistics 
showing that the domestic stock had been reduced to about 
20,000 tons started good buying and an upward move- 
ment in the market. A large export business in high- 
grade, intermediate and brass special spelters had been 
going on right along, owing to the need for those kinds 
in making ammunition. As early as the first week of 
January, high-grade spelter was selling for about 10c. 
per lb. and intermediates for 7i/2(gi8i^c.. with brass 
specials in proportion, while a premium of 5 to 10 points 
was being realized on such sorts of prime Western as 

MONTHLY AVERAGE PRICE OF SPELTER 

. New York . St . Louis London ■ 

Month 1913 1914 1913 1913 1914 1913 1913 1914 

Jan 6 9315.262 6 386 6 8515 112 21126 114 21533 

Feb 6 239 5 377 8.436 6.089 5.228 8 233 25 338 21 413 

Mar.. . . 6 078 5 250 8 5115.926 5 100 8.366 24 605 21460 

.\pr 5 641 5 113 10 012 5.491 4 963 9 837 23.313 21.569 

Xlay 5 406 5 074 14 781 5 256 4 924 14.610 24 383 21.393 

June. . 
July.. 
.4ug. 
Sept . . 
Oct ... 
Nov . 
Dec. 



1913 

30.SS4 

39.819 

44 141 

49 888 

68 100 

0(K) 21 208 4 974 4 S50 21 038 22 143 21 345 100 614 

.278 4 920 19 026 5 12S 4 770 IS 856 20 592 21 56S 97.230 

658 5 568 12 781 5 .508 5 418 12 611 20.706 t 67.786 

694 5 380 13 440 5 544 5.230 13 270 21.148 t 67.841 

.340 4 909 12 800 5 188 4 730 12.596 20.614 t 66.536 

229 5 112 13 962 5 083 4 962 15 792 20.581 23 016 88 409 

.134 3 .592 13 391 5 001 5 430 15 221 21 214 27.369 89.409 

Year 5 648 5.213 13.2,30 5 504 3 061 13.051 22.746 67 553 

New York and St. Louis, cent.s per pound. London, pounds sterling per lone 
ton. t Not reported. 

could be guaranteed a trifle better than ihe official limits 
respecting lead and iron contents. 

About the middle of January the spelter market had 
become so excited that it was hard to quote it accurately. 
The advancing tendency had been apparently foreseen 
bv certain sellers, who themselves were large buyers on 
the way up. The price continued to advance by leaps and 
boimds, and at the end of January .stood at about <%c. 
At this point a deadlock by exhaustion seemed to have 
been reached. The producers had sold out all of their 
stock and all of the metal they expected to make in 
February, except what was rc-^eryed for regular customers, 
to be settled for at the market. .March-April spelter was 
still availal)le. but consumers, skeptical of the advance, 
which they thought to be a put-up job, did not exhibit 
much interest in entering into forward contracts. Thi^ 
smelters in all quarters rejiorted the firing up of furnaces 
that were idle at the beginning of January, at which time 
there were a good many cold retorts, not including what 
were in the moriliund works in Kansas. High-grade 
spelter was rejiorted to have realized 15 to 17c. 

During February the market i^ontinued to advance, and 
tiie premiums for prompt deliveries rose higher and 
higher, while producers found difficulty in interesting 
buyers in the usual contracts running two or three 



•Throughout this article the prices quoted refer to t'lc 
market on the basis of St. Louis. 



G3 



THK EX(iIXEEinX(i d- MIXIXG .TOURXAL 



Vol. JOl, Xo. 2 



months ahead. By the middle of February there was no 
longer any wholesale market in spelter lor prompt de- 
livery, for the reason that all supplies except occasional 
odd lots had been exhausted. At this time it was first 
i-umored that some Australian ore was coming to this 
country for smelting here. Early in :\farch speller 
touched lOc, and that price was spoken of as killing con- 
sumption for purely industrial purposes. Alarming news 
was received respecting this situation, esjiecially among 
the sjalvanizers. This led ])rodncers to believe that they 
had been riding the whirlwind a little too long, and be- 
"■inning on ilar. i, strenuous efforts were made to place 
tonnages for any deliveries from Ajjril onward. This 
idea occurred to many sellers at the same time, and all 
kinds of efforts were made in the attempt to find a 
market. About ^lar. 10. April- :May and .May-June spelter 
was offered in large lots at Sc, with intimation of better 
terms to anyone who wanted to do business. E\en with 
such a cut, buyers could not be found. Hesale offers from 
several consumers appeared as a disturbing factor. How- 

ZINC-SMEI.TIXG CAP.VCITY OF THE CNITED ST.\TES 
(Xumbor of Retorts at End of Years) 

Name Situation IflU Wl"' 

American Spelter Co Pittsburg. I^an (Jl fi-. 

Am.TiranZ.VandCl>em.Co I^ngelotb Pemi. 864 3.b4b 

Anicri<-an Zinr Co of Ul Hillsboro. lU. 4.(X)0 4,000 

Ain.rii-aiiZin.-, LearlandSmg. Co.. Dearing, Kan. ^-^3 f-'ion 

\.,. n,;,. Z„,c. UadandSmg. Co. Canev, Kan. .3,648t b.08O 

I ,, i /u„ Co . . . . BartlesviUe, Okla. 5.184 .j,!.-<4 

1 1, Co CollinsvUle. Oljla. 8,0M 10.080 

r , ~, rCo.jj Chanute.Kan. 1.280§ 1,2S0 

n.n.kee S„K.lting Co Cherokee. Kan. (***) . n;«C, 

Clarksburg Zine Co Cljirksburg, W . \ a. ^'ll^t *.T'^'r 

CoUinsviUe Zinc Co Collin!i\Tlle, 111. 1 .o36| *• l,o3l 

Edgar Zinc Co St. I^uis, AIo. 1.100 2.0OO 

E<lg.ir Zinc Co Cherr>-vale. ICan. 4.S00 4,800 

Edgar Zinc Co Donora, Penn. (t) 3.648 

Granbv Minin" and SmE. Co Neodesha, Kan. 3.840 3.7«) 

Granbv .Mining and Smg. Co E. St. Louis, lU. 3,240 3,220 

Gras-selli Chemical Co Clarksburg, W. Vn o.760 o,7faO 

Grasselli Chemical Co Meadowbrook, W . \ a. ^■^}~^.^ 8,o92 

IlegelerZincCo Dan^-ille, 111. 1,800** 3.fiOO 

Henrj-ctta Spelter Co Henryetta, Okla. (I) blX) 

Illinois Zinc Co Peru. 111. 4,(h40 4,M 

lola Zinc Co Conereto. Kan. (t) W. 

Joplin Ore and Spelter Co Pittsburg, Kan. ( **') 1.440 

J. B. Kirk Gas and Acid Co.+t. ... lola, Kan. ( *^) 3,440 

Kusa Six-her Co Kusa, Okla. (t) 3-' J" 

La Hatpe Spelter Co.* Altoona, Kan. 3,(v>0t 3,960 

La Harpc Spelter Co Kusa, Okla. (t) lU 

U Harhe .Spelter Co* La Harpe, Kan. 1.850** l.M-l 

I^nj-on Smelting Co Pitt.sburg. Kan. <***) 448 

Robert Lanvon Zinc and Acid Co. Hilkboro, 111. 1.840 1,840 

Ijinvon-Starr Smelting Co Bartlesvilli-, Okla. 3,450 3,4,jl> 

Matthiessen and IlegelerZincCo La .Salle. 111. 5,230 6.16.S 

Mineral Point Zinc Co Depue. 111. 9,080 9,0b8 

National Zinc Co Ban lesville, Okla. 4,260 4,2W 

National Zinc Co ,Snri..Kfield, III. 3,200 3,200 

Nevada Smelting Co Nevada, .Mo. (tt) 872 

New Jersey Zinc Co. of Penn Palmcrton, Penn. 5,760 0,.2O 

Oklahoma Speller Co Kusa, Okla. (J) Ut 

Owen Speller Co . ttt Caney, Kan. (1) , 1.280 

Pittsburg Zinc Co.« Pittsburg. Kan. 910§ 010 

Prime Western S|xlter Co G.1S City, Kan, 4,768 4,868 

,Sandoval Znic Co Sandoval, ni. 890 896 

Tulsa Fuel and .Manufacturing Co. ColUnsville, Okla. 6.232 6,232 

i:nitcd States Zinc Co.jj || Sand Springs, Okla. 4,000 5,680 

United States Zinc Co Pueblo, Colo. 1,920 2,208 

TotaU 120,494 155,388 

* Taken over by I'. S. Smelting Co. in ,Iuiie, 1915. t Inactive during latter 
partofvcar. t Plant built in 1915. § Inactive throughout year. ||Taker 
over bv" American .Metal Co. in June, 1915. **No n^port received; ent.-red the 
.-am.- .i^ previous year, tt Taken over by U. S. Smi Iting Co. in July. 1015. 
;t Plant, was Ix'ing dismantle<l in 1914. but later was repaired and reopi'nod. 
55 f)r.rMle.l by Anuririi. M.tal f.. >.inie April. 191.5. |1 || Formelly Tulsa 

Spelter Co '♦*0|d plant dropped from list years ago, but renewed m 1915. 

ttt Operated by Amer. Zinc, Lead and Sm Co. tXX Not yet operating. 

ever, tlie news of a strike among the smelters in Oklahoma 
on JFar. i:! called a halt licnding observation as to what tliis 
would amount to. The smelters demanded .'JOc. ))er day 
advance in wages all around. On Mar. IT it was reported 
that a compronii.^e iiad been effected. 

Secontl Quarter — During the remainder til' Marcli the 
market remained dull and easy, but tlie beginiiiiig of 
April galvanizers began to exhibit more interest and tin- 
market started up again, liy the middle of the month 
the price for spelter was about '.)«i'.)\U: and there was 
being exhibited an increa.sed willingness iii some iiuying 
quarters to enter into contracts for delivery further ahead 



than theretofore. Toward the end of April the market 
began to become crazy. Inspired by the spectacular rise in 
the price of spot spelter at London, dealers, traders and 
speculators ran away with this market. The transactions 
were of extraordinary character, being in the main for 
deliveries ranging all over the remainder of the year. 
At the end of the month the price was quoted at 
i\l-j{(( 14c. This k'VL'l (d' price was simply paralyzing of 
consumption for ordinary purposes. The largest galvan- 
izing interest of the United States was reported to be 
frankly advising its customers to use painted sheets in- 
stead of galvanized. London re])orte(l that the govern- 
ment was taking bright wire instead of galvanized. 

During .May the market rose perpendicularly, transac- 
tions of extraordinary volume being consummated. The 
iniving was mostly by ammunition manufacturers, ilany 
of tliese had pbenomcnally lucrative contracts, the profit 
from which rendered the price paid for spelter almost 
immaterial. The chief thing in their minds apjjeared to 
be to contract for all the spelter they were going to 
rctpiire in lilliiig their orders. Prices were at sixes and 
sevens, dilVcrences of cents per pound being recorded in 
the same oilice on the same day. At the end of- Jlay the 
market was quoted at 20((i 22c. On June 4 the quotation 
was 2K«27c. 

At this point ammunition makers appeared to have 
satisfied their requirements or were disposed to hold olf 
■nid await developments, while as for the galvanizing 

AVERAGE PRICE OF ZINC SHEETS 
(In Cents ])er Pound) 



101 t 1915 

January.... 7.44 9.25 May... 

February... 7.25 12. 3S June... 

March 7 10 13.50 July 

April 7.00 14 13 August. 



1914 1915 1914 1915 

7.00 19,13 .September. 8. .50 16.00 

7.00 2125 October.. 8.07 IB. 00 

7.00 27 00 Nov<-mber. 8.00 20 00 

7.38 IS SO December.. 8.55 22 (H) 



Average for the year 1914 — 7.524; year 1915 — 17 37 cents. 
Note: — Thes'* are base prices for ordinary size .shii ts, in carload lots, f.o.b. 
Lasalle-Peru, 111., less 8 % d iscount . 

business, it has been simply paralyzed. Consumers were 
freely offering spelter for resale and were unable to find 
buyers. This situation led to a rapid decline, and on 
June 2o the quotation was l()(dl8c. Tliis was followeil 
by a rally, but it was not characterized by anj- such crazy 
buying as there lias been early in the month. At the einl 
of June the quotation was 19((/21c. 

Third Quarter — A new to]) was recorded on July !> 
at 20(r/22V2C. Ee])orts of olil smelteries being repaireil 
and new furnaces ami new works being built came from 
all quarters, a large increase in iirodiution l)eing thereby 
promised. A renewed relaxation in the demand led t. 
a secondary decline, liberal supplies being offered fi" 
numerous quarters. I'y early .\iigust tlie market .show i - 
all the earmarks of demoralization. Speculators wlm 
wanted to liquidate, manufacturers wlu) hail overbrouglii 
and wanted to resell and the wcaUer ]irnducers e.xerteil 
|)ressure. Stocks of metal a\ailable for ])i(>inpt deliverv 
began to increase, leather than sell such metal at tb' 
existing market, some ))roducers anticipated deliveries on 
their later contracts. 

At the niidille of .\ugust spelter stood at about lOi. 
]it!r II). At Ibis time there suddenly develojied a rather 
imi)or(ant buying demand, in which .some very huge 
domestic consumers lignrcil. their orders being taken ai 
about 10c. per lb. Englaml then coinmeiiced buying ami 
took a considerable tonnage at about 10' ^„'. This lifted 
the market out of the doldrums, and :i furlbiM- aihnncc 
ensueil on relatively small business. Touaiii the end of 
the month the Uniteil States Steel Corponitioii again 



January 8, 11)16 



THE ENdlNEKKMNG >S- MINIXfJ JOUIiXAL 



63 



bought a largo quantity of spelter at a sharp advance in 
|jrice. This buying, together with other orders, created 
roni'used and excited conditions, similar to what pre- 
vailed when spelter was 10c. higher. The market rose 
to 15@16i/;P- The large demand having been filled, 
l)uyers again became conspicuous by their ab.sence, and 
sellers immediately exhibited once more their desire to 
get spelter off their hands, with the natural result that 
I'le pnce began to sag off again. By the middle of 
September the price had fallen to about 121/2^' I-'"'- A 
curious feature at this time was the offering of spelter for 
uumediate delivery by the principal domestic consuming 
interest. Another rally put the market up to l-'SfT/llc. 
at the end of September. 

Fourth Quarter — During the early part of Ocluber the 
market drooped, and about tlie middle of (bo mouth was 



reason except that the foreign demand, which pn'viou.sly 
biu] been the backbone of the market, bad ceased, tempor- 
arily at least. Toward the middle of tiie month, however, 
there was a .sharp and equally incomprehensible advance, 
Avbich continued up to the close of the month, when the 
quotation was loVif''' 16%c. 

Summary — The spelter market during 1915 was charac- 
terized after the first month, or perhaps the first fortnight, 
l)y an absence of stock on hand; that is, the market lo.st 
its balance wheel and consequently was highly erratic. 
This caused the small sujjplies of spelter available for 
prompt delivery to command a premium throughout the 
year, but of course the volume of this premiimi business 
was relatively trifling. During the first quarter buyers 
were reluctant to enter into the usual two-montii and 
thrcp-mtjiitb contracts. During the second quarter not 




LEADIXi; ZIXC MINING AND .SiUOLTIXG CENTERS IN THE L'XlTED STATE.S 



<|unted at 10i/2(r' !•'!('. A moderately large business was 
done at this time at an average of about 12%c. There 
ilc\eloped then a rather large volume of business, whicli 
was done chiefly with foreign buyers, especially for export 
1o France. In flic nuiin it was done in contracts for 
deliveries running far ahead, ranging from contracts 
rovering the fii'st qiiiirter of 101(5 to contracts beginning 
immediately and running through the first quarter of 
I!)16 and even further. At (be end of October the pi'ico 
was about L'P/o^llVoc. 

Tn November the volume of business increased, domestic 
consumers figuring in tlie market, certain prominent gal- 
vanizers being large Iniyers, both for delivery in (be im- 
mediate quarter and in the following one. 'I'hc ]u-ice 
advanced steadily, and at the end of the month (be market 
was quoted at ISyof^'IS^c. On relatively small business 
in the early part of December, the market experienced a 
severe decline, for which there was apparently no special 



only would they do m). hut also they bought eagerly for 
<le!ivery right through the remainder of the year. At 
I his time and later the operations of dealers, speculators 
and traders added to the confusion. After spelter touched 
10c. in ]\[arch, there had been a relapse to 8c., and 
experts were expecting a complete collapse of the position, 
which was already beyond all precedent in the spelter 
industry. In i\Iay and June ammunition contractors 
hought spelter as if there were never going to be any more 
of the metal made. At aliout 25c., however, the madness 
exhausted itself. 

In the third quaiicr jirophccies of a steady decline to 
8c. or fie. iier lb. by the end of the year was general, 
owing to the large increase of capacity that was known to 
be going on. These prophecies failed \itterly of realiza- 
tion, the reason being that the new production did not 
develop so rapidly as it was thouglit it would. However, 
(iiii-iug (he third and fourth quarters there was a perfect 



(it TlIK F.X(;lXEKTnX(J d- .MIXTXi; JOURNAL Vol. 101, Xn. •? 

iipprec-iatidii tluit tlu' o-reat expwU'd addition to sujjjjly in two months. That was the end of liii: rcvn-so, ;iiiii 

was sinijily delayed, and eonseqnently there was a general the price climhed to $89 the first of Sc|ilcnilicT, ending; 

eaijcrness on the i)art oT iiniduccrs to i)bu-e contracts for the month at $8'i.50, rose to $!)li Hie liisi ol' Oclolier. 

distant deliveries at pi-ices far liclow what they would hack to $87.50. np again at the close to $!•:!. then In 

accept for the quarter ininiediatrly following. These $102. -jO one week, $112.50 one week and $1 IS the lattci' 

conditions ])rodnccil a wide range ol' pi-ice and made it two weeks of Xo\emher. As the year di'cw to a close. 

dittiriilt til sav at anv time what was the average ])tisition prices receded, luit the o]itiniism of the nuner's mind 

iif tlir market. sees more hig ]ii'irc's early in the new ycai-. while ])resent 

Till- pi-iic fill- high-gradi' >pcltrr. wliirli was lOr. at (igures are (piite satisfactory cnmpai-rd with previous 

the licgiiining of I'.M.'). ruse tn -lOr. ami ilccliiicd to '■)'>r. years. 

This plicnonu'ual priic li-d to ron^idrralilc iii-w ]iriidui'tiou Tin" ])i'oduction of cahimine assiimt'il an importance 

of llii> sort of nii'tal. and in the latter part of l!)|."i there nndi-eanied of in past years, as ]irii-es of this mineral 

was ai riiinnlalion of unsolil stocks of it. Init the ]iricc i-osc fiom $2.3 ha.'^c of -10% zinc, with the opeiung of the 

was held lii-nily at •I'lc. ]ier lli. TABt.E r .lOPI.IX DISTRICT ORE SHIPMENTS, ix lk)L-NUS 

Till' i;\|-ations in the spelter nia|-kcl completely upset .Missouri Bloudo Oilamim- Lead Values 

the ore marl I't For a Ion"' time the nrice for oie failed ■'•isp.-i- County 4:i(i,.-.S7,i:50 4,.>10.S40 (i2,9fl2,U00 .$19..507,8.50 

UK oil man. II. l oi a mii,, liiiu iiii |iiii(_ loi on laiiio x.-wton County 29.728,440 32,57!l.l()0 3,819,.>50 1.901,(W(I 

to advance aiiytllllig like in propoitioll of spelter. I.nwrenceCouAty 1.9S3,780 7.731. 2.30 19fi.l70 ai9.4..0 

Tliis caused many ore producers to consider that ilicy Total 468,249,.350 44„s.5i,2.30 (■,7,007.720 .$2i,b78,900 

were heing iinlaiiiy treated, ami at the demand of the oit*™c'ounty 5G,.341,ouo ig7,2so i<).43.5,i70 2,728,720 

Joiilin nroducers the attorncv-oeneral of Missouri filed K.ansas 

' ' •,,,;,',■., • ,. Cl.crolw County .W.1S.1.U10 113,000 3,560,470 2,290,480 

a comnlaint ai;aiiist about all ol the zinc smelters, on Total loi.-j (*) .-)79.77(i,o20 4.i,i:ii..'.io <)O,003,300 26,698,i9o 

,, I ,. ' • nil t- ■» t ^'^ 4- 1\ i i Total 1914 .509,07.1,490 39,42.).170 87,254,000 12,722,210 

the ground ol coiisi>iracy. llic I iiiteil .states IJcpartmeiit ini-n-asc... . ,,, 70,7(X),5io 5,70ii.340 2,749.300 i3,975,9so 

of justice was also led to inangnrale an iliquirv. iJoth - Owmb.-r .-si imatwl foicach county. Value increase over loorc- 

of the.se actions cvaiiorated in their own silliness. There .^ar, to $10 in March and $80 in June. AVhile the price 

was at all times a plethora of ore supplv. the lii-h prices declined through July and August, along with blende, 

that were being paid ft.r spelter and tiie large smelting it ^^as less sewre. at no time receding below $.30, and 

margins that the smelters were enjoying being iiremiums advancing again to $Sii in Xovember, 

on the ])()ssession of smelting capacity, not on the jhisscs- l-'or the lirst time in the history of the district, the pro- 

sioii of raw material. The' ]irice bir ore in the .loplin duction of calamine was taken over by men ofbig biLsiness 

market did indeed rise to iin|irecenilentcd ligiires. but 

never in ]iro|iiirt ion to the ]irice of spelter. On the other 

hand, miners \\ ho were selling their ore on sliding scale y 

contracls got the full bcnelit of the rise in the price for iMl- 

spelter. At certain lime.- of the year the supply of zinc 1903. 

ore was so large that it became impossihle for miners to 190.-.: 

make new contracts for it, and in >omc cases smelters ihoi'. 

lamelcd contracts. Large importations of .\ustralian ]!;";"; 

oi'e played an important part in the situation. 



ABLE :;. ORE PRICES IN JOPLIN DISTRICT 
(15 Years) 



I'.il.' 
l!H:; 
I'.ill, 



Zin 


Ore 


T.ei 


d Ore 


IliKh 


.\ver:u»c 


Hich 


,\vcrage 


.S3t 00 


?2l 21 


$47. 50 


$45.09 


12 00 


30.33 


,50 .00 


46. 10 


4200 


33.72 


60. 50 


.54.12 


.■>3 00 


35.92 


02 00 


.54 SO 


(10 00 


44 . 88 


SO 00 


02.12 


:.i 00 


43 . 30 


87.00 


77.7s 


.-.3 .10 


13.08 


88.. 50 


08 90 


17.00 


34.30 


(iO.OO 


.54 . 60 


55 00 


41.08 


()0.,50 


>t.5(i 


52 00 


40.42 


58.00 


51.98 


51 00 


39.90 


WOO 


.56 76 


Ii7 00 


.53. 33 


08.00 


56.60 


50 00 


12.20 


.58.00 


52. 52 




40.46 


.>4.S0 


46.55 


13S (10 


77.84 


80.00 


.54.14 



ILeadl attiidl ^iimc Sim Hike 

ICnstlPncfe aim fl*9I15 instincts, ami the Cranhy camp was exploded in a liiisi- 

l> . I ,,^^,.. Y Zdok" nesslike manner. ShJpinents grew under able mine 

„ ,, , , . ,.,,1 • 11-1 lirosecntioii Irom a lew (arloads the lirsl of ibe vear lo 

A review oi the market price ol lileiide, a zmc sul])liHle ' 1 ,,1 1 -I'l 1., „i 

, ,. , . ■ ■,• , . 1 ■ upward ol , ill carloads pel' week at ibe close. I be demand 

ore, and ol calamine, a zinc sdicate-caihoiiale ore. (luring . ' 111 11 

, ' ,,,. , ... ,. , , ,,,, , ■,, ol smelters lor ores ot certain grades being learned bv 

the vear 1!)1.) reads like a lablc. '1 be vear opened with '^ 

,■■,,• (• Uf- I -.1 , , I , r ,. 1 I ,', I . .,,,,1 |.,, ^^• T.\BI.E 3. .\VRR.-\GE MOXTIII.V ORE PRICES 

a high ])rice ol $.)1..)0 jicr ton lor lilcmle. ami .1.11111,11 \ Zi„c On Leado.e 

closed Wilh what was then tlloUi:hl a phenomenal rise to .lopIin base Joplin all ores I'lulteyille .loplin riuttcyillr 

, ; , , ' ,11 lOl-t 1015 1914 1915 1914 1915 1914 1915 1914 191.. 

$()7..")0. or $1:1 111 one nionlh. |-ebruar\ iioleil a lurtlier $$!?.? $.$$$?* 

advance 1., $n;, then a reaction to $(;:! 'the latter pari of Ji-;;;^^- j" V,; ,;i ;^ - ;', ^', ]\\ ^'1 ;«; « >;; ^ ?« |1: ^;; vj « |^ ;: 

JFarcli and early Aj.ril, thai month closing at $«8. fcl- ^'^j'>-- :;: ^^ ;;! r; :;; j! ^;^ •:; ^|; '■!: "^ ^^ ^f^ Ij; :'; ';: ';;; '',' ,;;; 

lowed with $88 in JIay. Here came Hie ])yrolecliiiical iC::::;: 'l;^<^ ;i ;^^ i^. .;c ^.-i jii, i;| !., "^'.Z '£ li! ^^ :.u n is oe ..: iin 

(li.s|)lay of the year, with advances in two week.s to jui".;;; !>Tai,i,', ; i, ,,,,i 1 1 !m Jimo.', ,,;; i , 7.. .■• -n n. :.( n , on 

*ins.90, :i lift ol $oO in a fortnight, $70 in a month ;;l^i„;r... lii iii 1-, ':■:, 11 'lil is n 1' '"', '':] uu 1 ' ]u 'L "■■ 1,' "1\ ';\ Z 

and $H4 in four months. All iirevioiis records of high '^;l^^,:, .HI 'l^^ i'l; Tx oil 0! ;:! 1',' lin '.s :: I" ^ .:, \\ I.' in :'. ' 

)>rices lloate.l away as an iridescent dream, and there was "ecembt-r. 4sjj5 os^o 11^95 in^.i irj--. ms >«< 1,, m^ r-j^ ^j 70 .n 

no doilb! in the minds of mailV thai $200 ])er ton would Ve«r 41.42 81. 57 39 43 78 47 42.(33 79 34 46. .55 .55 34 48.75 55 e 

1 I- 1 ii ■ ,1 11 \ • . ,,4 .t .lonlin bn»o and Plalteville Zinc prices nre on standard ores, 00% zinc. Sen i 

be reallZci! Wiflllll anolhcr nionlh. A guessing contest, .loplm price is average for nil zinc ores sold. 

originated a I this time, brought out guesses up to $.">00 „„.^^, ,,j^, producers of calamine, thev wilbheld their 

l.er ton. The next week il .Iropped to $i:il. Xo one ^,.p p,.,,,,, ,„;„.i^,,t durino- the i)criods of low-pri.e level. 

believed it could po.ssibly slay down, but again it dropiied, rpi^j^ ,„;,i„taiiicil a linn' calamine price for Ihe |irodu.ei 

Ihis time to $112.50. Then the price was sliced olT $-io ,,p .small (luanlilies 

more in the next three- week.s .striking a low level of ^J,^ advanced in casv steps rroni a lii-h price of $ls 

^ '•-•''" PL''- t"" tl"' tl'i'''' week of August, a drop of $6G ^„.,. <-„„ (he fivM „f (he year to $.'-|l..M) al Ibc end of May. 

•Joplln, Mo. .\s \\i1li zinc, lead had a sky-mouniing experience in 



Jiimiiiry S, I Dili 



Till-: KN'CIXI 



\(; c~ Mixi.vc .joi'iiXAi 



fio 



liiiiu, atToplaniii;: up ti> ^S'l. Tiiuu, ni(l<l(!rlc'S!., it lloiiii- 
(lered down to !)>)G..jO at the cud (jf Aii;,'u.<t. Ell'orls U> 
(iiid a higher hiiidiiig were iiieJlcctual. Falling so hiw, 
howevL'i', made the re-ascen.sion easier, and an unrestrittcd 
demand elevated jirices .-nioothly to $7"^ at the close ol' 
Xovonibor, with the demand growing and higher prices 
in prospect for the new year. 

The year's production was 312.4")0 tons of all grades 
of zinc ores, only 0,830 tons in excess of 1913. The 
year's average price of $7?. 84 per ton was $24.51 per ton 
greater than the average price in 1012. With these com- 
parisons it is indicated that a maximum production 
cannot readily be increa.sed, yet it is possible that the 
movement inaugurated by the high level of ])i-ices in 
]'.<]') may result in a larger increase in the 1!>1(J yield, 
even though the price decline to a lower level. The 
production of this district is staple and cannot he spas- 
modically influenced, advancing slowly and receding 
slowly with price variations. 

Metallurgically, no effort developed toward larger 
mills. Instead of greater capacity for heads, the increase 
in yield was directed to the tails. l)y the addition from 
time to time of slime tables. The disposal of the tail 
waste is a problem being threshed out. The level surface 
of this section presents a situation unusual in mining 
regions. Some mines installed cars for waste delivery. 
This proved unsatisfactory. Dewatering is now advo- 
cated, with a return to the belt-and-cup elevator, placing 
additional elevators on top of preceding dumps. Wet 
delivery is the easiest disposal of waste, but cost is against 
it in actual practice. 

ZaEac anadl ILeadl MaEaiia^ asa Salbeipasi 
By it. H. Kxox 

The Iiidder Concession, about 1,000 sq.mi. in area, is 
held by a Iiussian company. The smeltery and coal 
nunes are held by another Russian company. Both are 
controlled by an English company called the Irtysh 
Cor]ioratiou, Limited. The Eidder group lies on the 
northern spurs of the Altai Mountains in .Siberia and is 
coiniccted. by about fiO mi. of railway now under con- 
struction, with the Irtysh River, which is navigable about 
seven months in the year. 

The Ridder mine alone has developed up to date, 
mainly bv borings, over three million tons of ore, which 
falls into two classes, the so-called "solid sulphides" and 
the "disseminated ore." In August, 1915, the general 
average contents of the two classes of ore were as fol- 
hjws : 

Gold, SUver, Cu, Lear], Zinc, 

Long Tons Oz. Oz. % ''.'< ", 

Solid sulphides 94.i,000 0.47 9.7 15 18.1 31.2 

Concentrating ore ... 2.229,000 0.71 1.7 O.T, 3.5 6.7 

Total 3,174,000 0.64 4.1 O.S 7.8 14.0 

On this basis the estimated net profit in sight is 
':10,800.000 without reference to other mines of the group 
tlinn the Ridder. 

The Ridder dejiosit is roughly talmlar in form and 
is a])])roximateIy conformable with the inclosing strata, 
((insisting of ancient and altered slates and lull's and 
igneous sills. The solid sulphide orebody is a complete 
rcplacemout of the rock and is underlaid by the dis- 
seminated ore which is a partial replacement with the 
hornstone gangue. The treatment of the ore at the 
mine involves the separation of the solid sulphides into 



lead and zinc concunlrates and a concentration of the 
disseminated on; al.so into lead and zinc con( i iitrates. 
This is accomplished by the ordinary- hydraulic imthods 
supplemented !iy flotation for the treatment of slimes. 
The jiroducts are to be shipped to the Ii-tysh River by 
rail, transported on barges down the river to the coal 
mines at Ekibastus, where they will be smelted to lead 
bullion, s])elter and co])per matte. The fini.shed products 
will then be shipped further down the river to Omsk on 
the trans-Siberian railway and thence to market. 

Notwithstanding the e.\ceptioual difficulties imposed 
by war conditions, the construction of the smelting plant 
is proceeding, and it is expected that the first of the 
zinc ])laiit will be in operation in the spring, whereas the 
lead jjlaiit will be ready by the autum of 1916. 



Z^asac Masaaffiig ana wrascoimsaia 

By J. v.. Kio.v.NEDY* 

War orders for spelter were reflected in the production 
and price of zinc ore. The net tonnage of zinc ore 
ship])ed to smelteries from the Wisconsin district, includ- 
ing Jo Davies County, Illinois, in the first 11 months of 
the year was 189,643,750 lb., an increase of 24%. The 

TABLE 1. WTSCOXSIX ZIXC OUTPUT, 1915 
(First 11 Months) 

Net to Smplterii^ Gross from Min(^ 

1914 1915 1914 1915 

Hiehland 5,097,650 3,.538.060 .5,097,6.M 3..538.0BO 

Linden 7,.570,190 12,716,810 11,612,280 13.1U.GSI) 

Mifflir, ■ 6,855,120 9.202,560 40,743,220 49,6in,7.iO 

Mineral Point 36,996.820 52,091,480 1,095,480 972,780 

Dodgevillc 1,254,290 1,109,150 1,516.270 l,109,l.jO 

Montfort 1,906,000 1,906,000 

Platteville 12.781,940 18,7.35,760 .5,287.560 15,098,470 

Cuba City 19,640,100 31,605,060 .5.370.430 3.642,600 

Benton 31.740.910 36,759,190 69.563,720 119.173.94(1 

Hazel Green 14.222.200 11,1.57,960 31,625.100 40.289,060 

Shullsburg 2,090,070 1.130,300 19.209.800 5.712,300 

Potosi 6.51,420 e.il.42tl 

Galena 12,025,700 10.946,000 46,046.410 43.816.440 

Totals 1.52.186.990 1.S9.643.7.50 2.39,073,920 296.735.(vJ0 

Shipment of Field mines from Scales Mound is credited to Benton. 

tonnage of lead ore shipped was 6,338,640 lb., an increase 
of 31%, while the shipment of sulphur ore, 26,534,310 
lb., decreased 13%. Aside from the high price of zinc 
ore, the feature of the year's progress was the increase in 
roasting capacity, as shown in Table 2. Low-grade ore 
was in little demand. 

AVide variation was made in the price of zinc ore. The 
year opened at $50 per ton base for 60 7o grades. The 
price fluctuated between $55 and $75 until June, when 
$100 per ton was reached, and the price was maintained 
at $100 and over for two months, going as high as $130 
in the week ended June 19. The base declined as low as 
$60 during one week in .Vugust. but advanced as high as 
$110 in November. The highest premium price reported 
paid was $131.20. Prices paid for zinc ore taken under 
contract exceeded those paid in the open market, but were 
not available for publication. 

A total of 57 mills and 12 roasters were in operation 
(Uiiing the year. Fifteen concentrating mills were c-on- 
structed: The Kittoe, Biddick, Lucky Six, Treg-anza. 
ilcMillan, Field-Thom]ison, Graham, Gilman. Long- 
henry, f'ruson. M. & II., O])timo Xo. 3, Stoner, TC. ('. (!t 
M. and Blackstone. The Wisconsin Zinc Co. will shortly 
erect four more: The Longhorn. Birkbeck, C. A. Thoin])- 
son and East End Champion. The Frontier company 
will equip the Ilird. The Wisconsin Zinc Co. built a 

♦riattevilU', Wis. 



66 



Till': KXGINEERIXG <jr MIXING JOUEXAL 



Vol. 101, No. 2 



Skinner-type roaster at the Champion mine, Xew Dig- 
gings. At the year end, the JVIiiieral Point Zinc Co. was 
building a Skinner roaster at Mineral Toint to replace 
the old cylinder type, and the Field Mining and Milling 
Co. was assembling a Mathey roaster at Galena. The 

TABLE 2. WISCONSIX ZINC-SMELTING EQUIPMENT, 1915 

Capacity per 

No. Ivihis No. Machines Week in Tons 

Type of Type of in Operation in Operation of Green Ore* 

Roaster Machines .1914 1915 1914 1915 1914 1915 

Min.Pt.Z.Co.. Mathey Wethcrill 4 5 3 4 700 1,050 

National Mathev Dings 2 4 li 12 400 SOO 

Empiret Mathev Dines 2 2 4 5 200 250 

CampbeUt Campbell Campbell 3 3 8 8 200 200 

Linden Z. Co... Campbell CampbeU 1 1 2 3 140 280 
Indian Mound Mathev Cleveland- 

Knowles 1 1 1 1 125 125 

Joplint Mathev Cleveland- 

Knowles 3 4 400 
Championt. Skinner Cleveland- 

Knowles 1 . 6 SOO 

Benton Ro. Co. Mathey Dings 2 3 200 

Enterprise Mathev Dings 1 1 .. . 125 

Climax Mathev Dings 1 1 125 

Gr. Western.. Mathey Cleveland- 

Knowles 1 1 . 125 

1,765 4.480 

2,715 

t Wisconsin Zinc 



13 



24 



49 



ewhat according to grade of 



' Capacity var 
Co. plants. 

most development work was done in the Benton-X"ew 
Diggings territory, but many prospect drills were busy 
in every camp of the district. 

The Wisconsin law enacted by the Legislature of 1913, 
assessing mineral lands for taxation upon the computed 
value of "ore in the ground," was amended in so far as it 
applied to lead and zinc deposits. By the terms of the 
new section the value of the land exclusive of its mineral 
content shall first be determined by the assessor, and to 
this there shall be added, in lieu of the value of such 
mineral content, one-fifth of the gro.«s amount of the 
sales of any ore extracted at any time and sold during 
the preceding calendar year. The sum total is the valua- 
tion subject to the current rate of taxation, .separate and 
distinct from the personal-property valuation of l)uild- 
ings, machinery and equipment, which is likewise subject 
to the current rate of taxation. 

The ))rice for cailinium during 1915 was ^1.2')(a 1.50 
per lb. This metal is used chiefly by the manufacturers of 
silverware. It has no military use, at least none of 
consequence, and its history in 1915 was therefore quite 
different from that of the other metals. Indeed, the cou- 
siini])tion of it was less tlian it was in 1914. 
Si 

Tlhe BJew Yorlfe Timi Mg&ifl&et 

The New York tin market during 1915 was purely a 
local market, limited by consum])tive demand and at 
times during the year dwindling to a very small affair. 
Its couisc depended considerably uikiii the London 
market. 

In January tlie market opened rather weak witii busi- 
ness slow, and an advance in London, mainly based on the 
spot position, failed to stir buyers here. Later in the 
month the London prices became firmer, hut consumers 
here paid very little attention and i)urchases wi^rc small. 
Business continiiod light through the month. In Febru- 
ary there was a rise in prices of sonicthing like 3c. per lb., 
which was due principally to freight congestion on the 
docks in London and difllculty in getting freight room 
for .\tlantic shipments, which caused some expectation nf 
scarcity here. Business later .•^nbsidcd inlo dullness, and 
buying was only for necessary requirements. 



In March the market continued dull, but there was an 
advance in prices, owing chiefly to the difficulty of get- 
ting supplies. Later in the month the situation developed 
into a shortage of spot supply here, and although there 
was no panic, prices rose to what proved to be the highest 
level of the year, the average for March in X'^ew York 
being 48.-t26c. The actual shortage was increased in its 
effect upon the market by the British government pro- 
hibition of the exportation of Straits tin to other than 
British ports. Business at the highest prices was very 
small. In April the market was rather erratic, prices re- 
maining high, but fluctuating from day to day on small 
business. 

In May the market was quiet, but there was a fair turn- 
over of metal at prices rather lower than those that pre- 
vailed in April. The importation from Great Britain 
under consular supervision had been reduced to a work- 
able form, and little difficulty was found. Later in the 
month some u])ward fluctuation was caused by the sink- 
ing of the "Lusitania." The effect of the rise, however, 

MONTHLY .WERAGE PRICES OF TIN IN 1913. 1914, AND 1915 

• New York • London > 

Month 1913 1914 1915 1913 1914 1915 

.lanuarv .50.298 37.779 .34,260 238 273 171 905 156.550 

Februarj- 48 766 39.830 37.415 220.140 181.556 176.925 

March 46.S32 38.038 48.426 213.615 173 619 180.141 

April 49 115 36 154 47.884 224 1.59 163 963 166.225 

Mav 49.038 33.360 38.790 224 143 150.702 162.675 

,Tun"e 44 820 30 577 40.288 207.208 138.321 167.636 

July 40 260 31707 37.423 183 511 142.517 167.080 

.\ugust 41.582 * .34.389 188 731 * 151.440 

September 42.410 32.675 33.125 193 074 * 152.625 

October 40 462 30.284 33 OSO 184 837 * 151.554 

November 39.810 33.304 39 224 180.869 139 391 167.670 

December 37.635 .33.601 38 779 171786 147 102 167.000 

.\v.year 44 2.52 38.590 206 279 163.960 

New York in cents per pouiul ; London in pounds sterling per long ton. * No 
<iuotations. 

was to quiet business down and make sales smaller than 
they had been. At the beginning of June business was 
moderate with only small fluctuations, but toward the 
middle of the month demand was active and strong and 
consideraiile sal;>s were made, after which the market 
(|uieted down and the volume of business became small. 
The quantity of tin sold during the month, or rather, it 
^il(lllld be .'iaid, during its active .season, was considerable 
and the average price for the month was over 40c. 

In July the market wns xcry (|iiiet, consumers being 
for the most part su]iplic(l with metal, while there were 
good arrivals and a sullicient supply, sellers rather press- 
ing metal for sale. August showed no special demand, 
and prices were rather weak. Dealings in spot were slow, 
the demand for futures being rather better. The low 
rates for sterling exchange seriously affected the market. 

Throughout Seiiteinbcr the market continued dull, with 
sales only of material that was needed by consumers and 
a general absence of fluctuations. About the beginning of 
October rumors began to be circulated that the govern- 
ment of the Federated .Malay States intended to put an 
exjiort duty on fin. These reports were cabled over to 
Europe, where dealers apimrcntly bad not heard them, 
and this was followed by a sharp rise in price. The 
rumors were subsequently contradicted. Later in the 
month the market was steady, being supported by a fair 
buying by consumers. 

In November the ])ricc rose again under the inlliiciict' 
of rather heavy luiying. which .seemed to lie tine cliieny 
to the im]irovemeiit in difTerent kinils of business where 
tin is required. About the middle of the month there was 
a sharp advance caused by the increased demand and by 
rumors concerning the stoj)]iage of British vessels in the 
Suez Canal. The discovery that fbcse were rnniors only 



Jniiuary 8, ^'■)^{^, 



TiiK ex(;ixi-:kim.\(; ^- .m]X[X(; journal 



67 



mill lliat the canal hail nut been intcrlVrcil with caii.sed 
a rccessioji, anil the |inro (lro|)]ie(l rioni the high ])oint 
reached (luring tiie month. Toward thu end of the month 
business was light and the market declined. The.-ie con- 
ditions extended into December, hut only a fair business 
was done in .s])ot on the decline. Subsequently the market 
rose very sharply on news that the British government 
intended to curtail exports until a safe working stock 
could be accuniulated. Wiien it was learned that the 
government idea of this safe stock was 4,000 tons, of 
which 3,000 tons was already on hand, the price dropped 
again, and for the remainder of the month business was 
on a moderate .scale, maiidy for early consumption. 

The fluctuations in December were a fair indication of 
the general course of the market, which on the whole was 
light and easily affected by current rumors or only mod- 
erate buying. 

Tasa Sffiffiellfenim^ iim "Uiraatedl Stattes 

The American Smelting and Refining Co. has about 
completed an addition to its Perth Amboy works, which 
consists of a new plant for the smelting of tin ores and 
concentrates and the electrolytic refining of tin. 

The United States im]>orts about 45.000 tons of tin 
yearly, and of this about 90% is Straits tin, which is 
largely consumed in the manufacture of tinplate, for 

TI.X PRODUCTION .^XD COXSUMPTION 
(In Long Tons) 



Kxpnrts. Str: 
Expnrl-, \.. 

naiik' I I 



Soutli African produfl 
XiKeri.in production* 
Comwall production* 



191.3 


1914 


1915 


62,242 


61,986 


60,760 


:i.2.>3 


1,771 


2.275 


17,142 


10.975 


15,093 


S,200 


8,255 


7.097 


22,71!) 


24,844 


18.800 


1.900 


2,276 


2.158 




1,962 


1,899 


4.900 


4, .500 


4.000 


120,356 


116,.569 


118,082 


45,900 


42,995 


49,480 


28.736 


30.531 


39.937 


in,.W3 


15.810 


7,025 


L'l,2.'i0 


18,633 


11,5.50 


1,000 


1.0.50 


1,100 


6.,50O 


6,400 


0,li.">() 


119,959 


115,419 


116.342 


16.045 


13,432 


14.. -.35 



Total 

r. S. imports and consumption 

(Ireat Britain, imports and consumption . . .. 

Holland, imports 

f )thcr Europe, imports 

.Australian consumption , 
Cliina and India consuraptiuu . 

Totals 

\'isible stocks, Dec. 1 

*\ot in "Statistics." 

which purpose a practically pure tin is required. At pres- 
ent this can be obtained in quantity only from the Straits 
Settlements. The remainder of our importations is 
mostly from P^nglish smelters and is used for alloys, 
lirincipally solder. 

The Straits Settlements imposes a protective export 
duty on tin ores, thus compelling the reduction to metallic 
form in the country in which it is produced. Several 
years ago a tin smeltery was built at Bayonne, X. J., but 
about the time it was completed this duty was imposed, 
so the works was never oi^erated. 

Apart from the Straits Settlements, Bolivia is the larg- 
est producer of tin ore, but the Bolivian tin contains 
impurities, which with the established methods of smelt- 
ing do not permit the jiroduction of a tin suitable for tin- 
jilate, the princijial use for tin in this country. The plant 
now being built at T'erth .\mboy is not only to '■'nclt the 
impure ores from Bolivia and other countries, but also 
is to refine the product by an electrolytic process. 

Kecent analysis of this electrolytic tin made in England 
by the most experienced chemists in the tin trade shows 
it to run 9!).ns% pure, wliile the base metal from which 
this was produced contained only 93% tin. The impuri- 
ties consist of lead, antimony and copper as well as small 
amounts of many other metals. Tests have also been 



made of this electrolytic tin by tin-jdate manufacturers 
and it is proiiouiieed equal in every respect to the be.*! 
StraiLs tin. 

The J'erth Amboy plant is, of course, ':o a certain 
extent an experiment. Probably some difficulties will 
have to be overcome, but the indications are that it will 
be a success, as the work is in the hands of expert men, 
both in the smelting of tin ores and the electrolytic treat- 
ment of metals. One patent has recently been i.ssued to 
the company for electrolytic refining of tin, and others 
are ])ending. 

Tisa Dsa IBoHivHa 

Follnwing the dcin-essioii of 191 t, a revival came in 
the tir.st part of 191.5, when it was found that the export 
of concentrates could be resumed and that there was 
iwstablished a regular market for tin ore in England. 
Production was soon stimulated by improvement in prices, 
I'ut toward the middle of the year exports declined, owing 
to the large stock of tin ore accumulated in Liverpool, 
(lecrea.se in the price for the metal and difficulty in sell- 
ing low-grade concentrates. There was a change for the 
better in Octolicr, and in the last quarter of 1915 all the 
mines were working at full capacity. The exportation 
from Bolivia in 191.5 is estimated at 42,000 metric tons 
of concentrates, averaging 60% tin, compared with 37,- 
200 tons in 1914 and 44,fi00 tons in 1913. 

Probably the tin production of Bolivia will increase 
during the five years next to come, owing to improve- 
ment in mining and milling practice and better railway 
facilities. However, it is considered doubtful whether 
the production of Bolivia will exceed 00,000 tons of con- 
centrates per annum in the near future. No new tin 
mines of importance are being opened. 

Favoralile conditions for tin mining in Bolivia in 191.5 
were the low exchange rate of Bolivian currency and 
the relatively low wages for miners, there having been a 
reduction during the crisis of 1914. Unfavorable factors 
were the elimination of the competition of the German 
smelters and the closing of several small British and 
French smelteries. The largest smelters in Great Britain 
continue to buy tin concentrates, but selected the best 
qualities on the market and raised their returning charge 
from £10 to £16 per ton of 60% concentrates, retaining 
the usual sliding scale of 5s. per unit. Ore of lower 
grade than 65% tin or with undesirable impurities was 
practically un.salable. The entry of the American Smelt- 
ing and Refining Co. into the market, however, helped 
matters a good deal. An unfavorable factor in prosjject 
is the danger that the Bolivian government may put an 
export tax on tin ore. 

Q^BclfesHlver 

Tlie inddiictioii of quicksilver in the United States in 
1915, according to the United States Geological Survey, 
was 20,681 flasks, compared with 16.548 flasks in 1914. 
The output of California was i;>.916 flasks in 1015, com- 
pared with 11.303 flasks in 1911. The chief producers 
in California in 1915 were the Now Tdria mines, the New 
Guadalu])e and New Almaden, the Oceanic, the St. Johns 
and the Oat Hill. The remainder of the American pro- 
duction was derived from Nevada and Texas. 

Tn Nevada active prospecting and development con- 
tinued in 1915. and the total output increased. A 50-ton 



68 



THK KNCINEERING cr' MINING JOURNAL 



Vol. 101, No. 2 



lurnace was under construction at the Golrlbanks, during 
the year. In N3'e County the ilercury mine, near lone, 
was shut down from February- to July, but made a con- 
siderable output the latter half of the year. The Nevada 
Cinnabar Co. reported an active year and largely increased 
yield. The Telluride group, near Beatty, was hampered 
by litigation, but made a small output from concentrates 
treated in a retort. 

The exports of quicksilver from the United States in 
1915 were about 3,300 flasks, compared with 1,440 flasks 
in 1914. The imports were about 5,200 flasks, compared 

A\\ERAGE MONTHLY PRICE OF QriCKSILVER 
(Per Flask of 75 Lb.) 

19U ^^ 1915 _ 

San San 

Month New York Francisco London New York Francisco London 

January... S.'^S.Vo $.38. B3 £7.50 S5160 .?50.80 £1135 

February... 39 00 38.50 7 .50 59 38 58.00 12 28 

March 38 60 38.30 7 30 73 13 62.16 12 50 

April 38 00 38.00 7 00 7150 64 31 12 44 

May 37.90 37 60 7.00 77 20 67 50 11 80 

•lune 38 00 37.13 7.00 95 63 88 13 15 13 

July 36 75 36 50 6.75 95.50 92.50 17 94 

.\ugust 83 00 90 00 92.90 89 25 18 15 

September.. 74.38 74 00 89.50 88.00 10.50 

October... 53 75 53 50 94 70 90 80 15 90 

November.. 50.30 51.00 108 13 102 00 16 38 

December.. 5125 51.00 .... 135 00 12125 16 63 

Year $48 31 $48.68 $87 01 $8123 £14 75 

with 8,198 flasks in 1914. The Italian embargo on 
quicksilver prevented the continuance of imports from 
that quarter. 

m. 

By' Murray Ixxe.s* 

California quicksilver jjroduction in 1915 is estimated 
at 13,910 flasks, an increase of 2,045 flasks over 1914. The 
principal producers were again the New Idria, Oceanic, 
New Almaden and Guadalupe. The new Idria, in 8au 
Benito County, produced 0.200 flasks, compared with 
0,600 flasks in 1914, while the Oceanic, New Almaden 
and Guadalupe were, as in 1914, the only other producers 
credited with more than 1,000 flasks each. In addition 
there was, as in recent years, a production of alxiut 2.500 
flasks from a dozen or more other ventures, items regard- 
ing which have appeared in the Journal from time to time 
during the year. There has been much talk of reopening 
old mines, but so far this lias not resulted in production 
or new equipment of importance. 

The average returns to the produirr in 1915 weie more 
than double those of 1914, and therefore the small increase 
in production is surprising. The New Idria, for exam])le, 
realized, according to its annual report of 1914. an 
average of $11 per flask, while returns for 1915 will be 
in the neighborhood of $85 per flask. The market ])ri(e 
advanced from $50 last January to $150 in December, 
19] 5, the market being well reflected in the Journal. 

Why has the quicksilver production in California 
steadily declined from an annual average of 00,000 flasks 
for the 10 years ending with 1885 to 1.3,000 fla.sks in 
the last two years, and why has the state's production 
shown no greater increase in 1915. notwithstanding the 
highest market price in 40 years? Exhaustion of the 
high-grade surface deposits answers the question in part 
only. One added reason is that probably nine-tenths of 
all the quicksilver deposits lie in the Coast Range and 
on lands that have, during the last 30 years, gradually 
been patented as agricultural and are no longer open 

•Oceanic Quicksilver Mine, Canibrin, Calif. 



for mineral location under our present mining laws. As 
a rule the owners of these lands know nothing cf mining 
or lack the means to develop and equip. The prospector 
has little inducement to develop ground that he cannot 
locate, and as a result the mineral remains undiscovered. 
In the meanwhile, after several lean years the surviving 
producers are more hopeful. 

AVhile the California production has steadily decreased, 
even in the last 10 years, from 30,000 to 13,000 flasks per 
year, it is instructive to note that the production in Austria 
has. during the same period, increased from 17,000 to 
27,000 flasks; that the production of the mines in Italy 
(owned by German and Austrian capital) has increased 
from 11,000 to 30,000 flasks — an exact reversal of our 
progress; also that the Spanish production (controlled 
in England) has increased from 25,000 to 44,000 flasks. 

Prior to 1895 our import tariff on quicksilver was 10c. 
per lb., and from 1895 to 1913 this duty was 7c. per lb. 
The present Administration then saw fit to place the duty 
on an ad valorem basis of 10%, and for 1913 the duty 
amounted to 4.8c. and for 1914 to 4.0c. per lb. The net 
result was that the producers were, market-wise, placed 
face to face with the cheapest labor in Europe and re- 
quested to compete. The imports on foreign quicksilver 
increased from 84 lb. in 1906 to 014,809 lb. in 1914 and 
ceased only when its export was prohibited by England 
and her allies. 

Quicksilver mining was once an important industry in 
California and may be so again if the investor is given 
leasonable assurance of a tariff that will permit him to 
o])erate in fair competition with European producers after 
the embargo is lifted and conditions are again normal. 
A rea.sonable import duty to compensate for the dift'erent 
labor conditions would ]irobably double the California 
production in a year or two. This production may not 
be of great importance outside of California, provided 
the United States can always be sure of adequate supplies 
for Government uses in times of emergency. However, 
for the time being, we are cut otf from foreign supplies, 
and the market indicates that it might be a difficult matter 
for even the Government to accumulate any considerable 
reserve stock for the manufacture of fulminate, antisep- 
tics, etc. The production, not only of California but of 
North America, is now far sboit of the ordinary peace 
requirements of the United States. These requirements 
are now in the neighborhood of 25,000 flasks per year and 
seem to be increasing. 

■*: 
Tessas QuBl£MsiE^®B° aim I'^IS 

Tlie Chisos Mining Co., which is the only operator in 
the Terlingua district, has closed a record-breaking year 
with a production of 1.200 flasks of (piicksilver for. the 
months of No\ember and December; 150 men are em- 
|doyo(l. Its capacity will soon be greatly increased by 
supplementing its 18-ton shaft furnace with a rotary fur- 
nace cajiable of treating double that amount. This will 
place at the coni])nny's disjjosal a large quantity of ore 
of such low grade that it could not have geen jireviously 
treated at a profit. Wayne Cartledge is general manager. 

The Big Bend mine is being reopened by W. D. 
Burcham. It lias been unwatered and one year's supply 
fif ore blocked out. The mine started its 50-ton furnace 
on Jan. 1. 1910. and is cxi)ected Id proiliice 300 fl.isks 
of quicksilver per inonlli. 



J;uiuar)- », 1910 



THE ENGINEERING c^ MIXING JOURNAL 



69 



Iroim aimdl Steel 

By FiiKDKinrK IIdhart 

The year 1915 will be remembered in the history of no jucount has been taken of changes in the stocks of iron 

the iron trade by the extraordinary changes which took ore on hand. The difference in the visible stocks was not 

place during its course and l)y the remarkable contrast be- large in comparison with the total, and there are no data 

tween its opening and closing. These changes were due in u|)on which the stocks in furnace yards can be estimated 

part to the conditions prevailing in Europe resulting in with any degree of correctness. There is good reason to 

a tremendous growth of export trade; but in large part believe, however, that those stocks are low, and this belief 
also to a growth in domestic business and the active de- table i. iron-ore production and consimption 

velopment of home consumption under the influence of (in Long Tons) 

increasing business confidence and the abundance of monev i9i3 i9i* I9i3 

T , , T 1 4- j-I 1 j-i ^i- „f 4.V.\ Lake Superioi sliipmcnts 49,947,116 33,721,897 47,143.804 

due to extraordinary crops and to the betterment or the southern ore mined 7,950.000 6,175,000 7,s25,ooo 

banking system under the new law. Eastern and other local ores ^•^^'■°«° ^'"^-^'"^ ■^•^^^■°^ 

The year 19 U closed with some anticipations of better jJ^'X^"^'"."'!'"!: ::::::::.::::;::: ''2;!9l:876 *i;435:oi!o llitl'o^ 

business, but with no immediate signs of any great im- Total supplies.. ...'.'.''.... m',44i,992 li!i^ 1^!^^ 

provement over the depressed conditions which then pre- Exports 1.042.131 660,000 635..500 

vailed. Production of p)ig iron was at the rate of only Approximate consumption 63,399,841 43,706,897 59,422,402 

ibout 22,000,000 tons a year, a low point as compared is supported by tlie urgency with which deliveries of ore 

with previous years, although it would have been consid- are called for. 

ered high only a few vears ago. For the first half of the - c!„t„.„,^„ i„r^- a,.,. 

°. f . • -, T n 1 4. I 1 1 j-l I^AKE bUPERlOR IRON OllK 

vear this rate increased graduallv but slowly and the 

otficial report showed little gain over 1914. From July -^s f'^r ^^ years past Lake Superior iron ore has sup- 
on, however, production of all kinds of finished materials rlied the material from which almost 80^^ of our pig iron 
began to increase, and month In' month this increase was '«> made. The statistics of shipments and distribution of 
greater in proportion, until the vear closed with an out- that ore are carefully kept, and the volume of the trade 
put of pig iron at the rate of 38,000,000 tons a year, the tan be accurately reported. The total shipments from 
highest ever reached in our industrial history and with a <l>e iron ranges of Michigan and Minnesota, arranged by 
production of finished steel which cannot be very far from P"rts, for the season year ended Dec. 1, are given by the 
the same tonna'i-e Marine Review of Cleveland as in Table 2. The total 

The first impetus to the trade was given by the placing table 2. lake iron-ore shipments 

of large orders, mainly for finished steel in various forms, " Tons^^^Per CenT Tons'^'^Per CenT 

for export to Europe. The countries engaged in war Escanaba 3,664.451 11.5 5.693.663 12..! 

/, ,, T- -.L 1 Ci. t t ■ I ■ 1 • Marquette 1,755,726 5.5 3,099.589 67 

turned to the Lnited States lor assistance in supplying Ashland 3.363,419 10.5 5.146.772 n.i 

... T !■ ^ i' i. 1 J. 1 TwoHarbors 5,610.262 17.5 8.367.381 IS.l 

munitions and found our manufacturers readv to respond, superior 11309743 .35.3 8.63.3.980 is. 4 

This class of business grew to large proportions as the ""'"'t "-•'^^■^1 _J2lL '^'^^'"^ ^^± 

year went on, but it was soon found that foreign demand „ Ji^J^^'^J- ■ ::;::; ''^f^-^Z '"^:° *'' 82S "":" 

was being supplemented by a heavy call from domestic '^^^^^ 3, 721^897 ~TT7 47,143.804 "~~" 

consumers. Under the ioint influence of the foreign and ,. , ', 1 "' ' i. j. - 

, ,. , 1 ,, 1 1 ii n 1 !■ sliipnicnts there shown represent a great increase over 

domestic demand the year closed with our nulls and fur- ' ^ ,,>.., 1 i. tt . •. 1 Ii 1 1 c 4^1 

, . , 1 . ,1 ■ e 11 1 1 those of 1914, but did not quite reach the level ot the pre- 

naces working closely up to their lull capacity and carry- . ' ,. ^, , ■ , j • .1 /i 1 

, °j, , . 1-, ii XI J- 11 vious vear. Of these shipments during the season, a total 

ing a volume of contracts which seemed to assure them lull ,..,..,■-,,, ,„„ , , ,. i j. t 1 t- ■ x ii 

, , . , 1 . .1 n i. 1 1.. 1 -inir. TM- c j-i. oi 37,332,428 tons was delivered at i.ake Erie ports, the 

work during at least the first halt ot 191G. Many of them, , , ■' '. , , t 1 tit- i • 1 • a o +1 

. , , ■ T 1 i J- I ■ 4' +1 1 balance going to ports on Lake Michigan, chiefly South 

indeed, are indisposed to accept business lor the second ^„ . '' ,"^ ' .,, ,, .-z: ,1 1 ,■ 

,,,,,.. ,, ,' 1 •111 II + 4 41 • Chicago and Gary, with a small quantitv to charcoal lur- 

hall, tearing that thev will be unable to carry out their & ■.' 1 ,,-■ 1 • rri,' 4- 4- 1 1 • „„+o 

/ , 2,, , '.• 1 • 4- 11 u I, naces in Wisconsin and Michigan. The total shipments 

iiitracts. The domestic business conies from all branches „ ., t 1 -n • i 1 .• 41 i- • ,, ,^«,.„ 

, ^, ., , „, ., 1 11111 II 14' from the Lake Erie docks tor the shipping season were 

ot the trade. The railroads, which had been backward lor „,.,,,, .,,^, i ,, • ■ 1 i.„ „ n , 

' , . ,, .. ■, 1 ,, 34,323,31G tons, and the ore remaining on docks on Dec. 

over a year, are increasing their calls tor rails and other ' ' ^ 4. 4. 1 • v, „i,;„ „*„ „„„ 

, .•',', .... i 4- • 1 1 1 1 was 9,797.980 tons. The rate at which shipments are 

luateriaL New building construction is already on a large .' - i 41 4. ■ 11 „,..i ,1 ;!,>,■ 4L„ of . i-, 

, , ■ 4. f 1 4. ■„ 4.1 „ now being made IS such that in all probability the stocks 

Slide and promises to be much greater in the new vear, ., , , ,, 1 • ■ -4.1 

., ' r ^, . , T ^ + ■ 1 +1 ' on docks when the shipping season opens in the spring 

while shipbuilding IS demanding more material than ever . >• 1 4 4. 4 Tf „„,,k,,. „f, 

, ,. ' 4.1 1 1 -4. 1 -1 41 4- <■ will be the lightest reported for a number ot > ears, 

be ore. Upon the whole, it may be said that tew years -i ?• 4. • •, rr,n„ o „,.„ „,4.:.„„+„j 

, \ .,, , ' ,• ,. ,. ., ,, • The rail shipments given in Table 2 are estimated. 

have opened with such prospects for activity as the one ,, - „ 4 4. 1 • 1 ...„ ,.,„.o,t,i ,, ,.,*. rri, , 

,,,'.,, rr, ^ {, , 1 .. ,, ■ 1,. the full reports not having been completed as vet. Ihe 

that has lust beo'un. Toward the close ot the year deliver- ,. , ,. ,, 1 xi 4.- j 1 

L 44ao J su UL„ TIT, ,1 ' ^- 1 shi pmcuts lor tlic scasou liavB uot bceH apportioHed by 

les Ot material were delayed by railroad congestion, and _.^^ I ^^ ^^^^^ ^^^^ ^^^^^.^^^ .^ .^ ^^^ 

exports by the lack of ocean steamers. (hat between G9 and 70% of the shipments were from tlie 

Iron Ore Mesabi and Vermilion ranges in Minnesota, with about 

The production and consumption of iron ore in the 307c from the old ranges in Michigan and Wisconsin. 

lnited States, which in 1914 showed a material decrease These ranges were actively worked with some new devel- 

liMiu previous years, recovered this year almost to the opments and showed heavy increases in shipments, but the 

liii^h figures of 1913. Approximate figures are given in great mines ot the Jlesabi kept up their full activity. 

'I'able 1, in which the exports and imjiorts are estimated All prejiarations are being made at the Lake Superior 

for the months of Xoveiiiber and December. In this table mines fiir great shij-.n-icnts in the coming season, and there 



TO 



THK ENdlNKEKIXG ^ MINIXC JOURXAL 



Vol. 101, Xu. 2 



is no doubt tliat very liigh figures will be reached. Prep- 
arations are also being made for a very large ore move- 
ment on the Lakes, and a peculiar situation has developed 
in the vessel market. The large companies have secured 
by charter or purchase nearly all the available boats out- 
side of their own fleets for carrying ore, and there will be 
no chance for outside shippers to secure wild tonnage. 

A peculiar feature of the Lake trade in 1915 is that the 
season opened light, and it was not until July that ore 
shipments began to be pushed. The consequence was that 
the greater part of the sliipments were handled in four 
months of the season, and the results showed what the 
present I..ake fleet can do, even witliout any additions to 
its capacity. The new vessels built during the year did 
not do much more than to till up the vacancies made by 
storm losses and depreciation. A number of new boats 
arc now imder contract, but very few of them will be ready 
for service until toward the close of the coming season. 

In the East the increasing demand for ore, as the sea- 
son went on, resulted in active work in the ore districts of 
eastern Pennsylvania, Xew Jersey, the Hudson IJiver and 
Lake Clianiplain. The importation of foreign ores was 
strictly limited by the scarcity of ocean tonnage and the 
high prices charged for freights. Even fi-om Cuba it was 
at times difficult to get vessels for transportation. Ship- 
ments from Xewfoundland and Labrador show a heavy 
decrease, as do those from Spain and Sweden. A begin- 
ning was made in the shipment of iron ore from Chile, 
Inu this was hindered during the closing months of the 
year by the delavs at the Panama Canal. 

The prices agreed \)p<>n for Lake iron ore for the season 
of litlfi were advanced about 70c. per ton over those of 
191.5. The new prices delivered at Lake Erie ports are: 
Old Range bessemer, $4.4-5 ; Mesabi bessemer, $4.20 ; 
Old Range nonbessemer, $3.70; Mesabi nonbessenier, 
$3.o5. Prices of Eastern ores are showing a correspond- 
ing increase, contracts for 191G delivery being made at 
81,4 (S)9e. per unit of iron as against (i%@7i/2c. a year ago. 
'J'hese prices are for ore delivered at furnaces in eastern 
Pennsylvania. 

PiG Ikox 

The production of pig iron by half-years for four years 
past is given in Table 3, the first half of 191.5 being the 
lorrected figures of the Iron and Steel Institute, while 

T.\BLE 3. PIG-IRON PRODUCTION BY H.\I.F-VEARS 

1912 1913 1914 1913 

First half 14.072.274 16.48.S,(J02 12,536,094 12,233,791 

Second half lo,0.>4,873 14,477,ti90 10,720,000 17,737,400 

Vmr 29,727.147 30,9(i(i,:i01 23,250,.'«)1 29,971,191 

the second half is estimated on the basis of the monthly 
statements of the furnaces. The official figures, when 
published, may show a small deviation, but it will piobal)ly 
be in the nature of an increase rather than a decrease. 
'I'he total shows an increase of G,(i39,000 tons over 1914 
and is only !t9.5,000 tons below that of 1913. It is greater 
than that of any other preceding year in the history of the 
trade. This is more remarkable from the fac't already 
stated tliat production in the early part of the year was at 
a low point. .\s will be seen from the table, the make of 
pig iron in the first half of the year was only 40. S^, 
wliile that of the second half was 59.2^ of the total. 

'I'he ore consumed in making this iron averaged 1.98 
tons to the ton of pig iron. About 900,000 tons of iron 
ore is u.sed yearly in openhcMrth furnaces and rolling 
mills. This quantity, however, is more than ollset iiy the 



quantity of mill cinder, slag and other miscellaneous ma- 
terials used in the blast furnaces. The fuel used, in mak- 
ing this iron was approximately 36,500,000 tons of eokc. 
48,500 tons of raw bituminous coal, 7G,500 tons of an- 
thracite and 35.000,000 bu. of charcoal. The limestone 
and dolomite used for flux was a])proximately 14,865,000 

TABLE 4. PIG-IRON PRODUCTION FOR 15 YEARS 



1901 


15,878,354 


1900 


25,,'i07,391 


1911 .. 


23.649,547 


1902 


.. 17,821.307 


1907 ... 


. 25,781,381 


1912... 


29.726,937 


1903 


18,009.252 


1908.... 


. 15,936,918 


1913... 


30,966.152 


1904 


. . 16,497.003 


1909 


25,795,471 


1914 ... 


. 23.332,244 


1905 


22,992,380 


1910 


. 27,3K5,567 


1915... 


. 29.971.191 



long tons. Table 4 shows the pig-iron production for 12 
years past in long tons and illustrates the increase in iron- 
making capacity during that period, as well as the increase 
in demand. Additions to blast-furnace capacity during 
the past two years have been comparatively small, but more 
are planned for the near future. 

Assuming that the proportions of the various classes 
of pig iron were approximately the same in the second half 
as in tlie first half of 1915, the production for the year, 
classified- according to intended uses, is given in Table 5, 

TABLE 5 PIG-IRON PRODUCTION BY GRADE.S 



Be.ssom<*r 

FoBndry 

Forge, t-tc. . 
ypiegel a':d fcl 



Tons 


Per 
Cent. 


Tons 


Per 
Cent- 


9,070,687 

7,859,127 

5.205,025 

412,.387 

185,118 


41 5 
33 7 
22.3 
17 
8 


12,886.696 

10,375.727 

6.086.579 

389,979 

232.210 


43.0 
34.6 
20.3 
1.3 
OS 


23,332.344 


100 


■29.971.191 


100 U 



in which low phosphorus is included with bessemer pig, 
ferrosilicon with foundry and a small tonnage of miscel- 
laneous with forge pig. The consumption of pig iron 
for two years past is sliown in Table 6, exports and im- 
ports for the last two montlis being estimated. The re- 
duction in stocks is also estimated and is probably stated 

TABLE 6 CONSUMPTION OF PIG-IRON 



Pr.xiuou„:, 
Inipi>rts- - 
D(H-r«is<- in btoi-ks . 


1913 
30,966.152 
156.435 


1914 
22,976,856 
138,903 


1915 
29,971,191 
81.190 
S.'iO.OOO 








Total supply 

E.\ports 

Increase in .stocks 


31,122,587 
277.648 
500,000 


23,115,739 
114.423 
750,000 


30,902.381 
209,240 




777.64S 
30,344,939 


864,42;i 
22,231,336 




Appmximatt- consumption.. 


30,693,141 



conservatively. There is no doubt that the large unsold 
stocks which were carried early in the year had practically 
disappeared at its close. The great increase in j)roduetion 
was made by the furnaces owned by the steel companies. 
The merchant furnaces are very largely employed in sup- 
plying the foundry trade, and in 1915, as has often been 
the case in previous years, the foundry business was the 
last to recover from its dullness, the urgent demand being 
chiefly fttr finished steel in various forms and for steel in 
billets and blooms. 

Steel 
There are no definite figures available at this early date 
for the production of steel, but its estimated amount wa.- 
about 29,500,000 tons, the total being very nearly equal 
to that of pig iron. The demand for finished steel re- 
(luired the u.'ie of very consideralile proportions of scrap 
in tlie openhearth furnaces. The conii)lcted returns will 
])robably show corisi<ieraiile variations from previous years 
in the clas.<es of steel made. The foreign orders for muni- 
tions re(|uircd the making of a large proportion of steel 
liars and rounds of large size and other unusual forms. 
Tlie tonnage of rails was rather lower than usual, altiiougli 
it luomises to be heavy for the coming year. Plates and 



Jaiiuan' 8. 191G 



THE KXClXHKRTXn ^^ MIXIXC JOT'KXAL 



ri 



structural material will probably constitule aixnit tin- usual 
proportion of finished steel. 

The more important new construction of the vear was 
that carried out by the Bethlehem Steel Co. and Ijy the 
Minnesota Steel Co. at Duluth, a subsidiary of the 
Steel Corporation. Xot much new work was done during 
the first half of the year, and comparatively little during 
the second half, although a number of works are putting 
in additional openhearth furnaces. Much new work is 
planned for the coming year. 

Several large consolidations have been talked about dur- 
ing the year, but for the most part, have not reached the 
stage of coniplotion. The Midvale Steel and Ordnance Co. 
is a notable instance, which has been completed. In 
the last quarter of the year an important change in the 
ownership of the great Cambria Steel Corporation oc- 
curred, owing to the sale of the large intei-est in the stock 
which has been held by the Pennsylvania R.R. The latest 
plan is the consolidation of this company with the Lacka- 
wanna Steel Co.. with its large works at Buffalo and 
with the Youngstown Sheet and Tube Co., which is an 
important manufacturer of finished material. The own- 
ership of the Pennsylvania Steel Co. has likewise changed, 
but nothing definite has so far been done with regard to 
its consolidation or extension. An important consolida- 
tion of Eastern blast furnaces has been arranged for, which 
includes the Thomas Iron Co.. the Wharton Iron and 
Steel Co. and the Empire Iron and Steel Co. These 
concerns own a number of blast furnaces, with extensive 
interests in ore and coal mines. When completed, the 
consolidation will be the largest prodiuer of merchant iron 
in the country. The Thomas Iron Co. is the oldest pro- 
ducer of merchant iron in the United States, as well as 
the largest. 

The United States Steel Corporation has followed the 
general course of the trade. Its business a:! ! o-irniugs 



have showed large rec(jvery, but its projjortion of the total 
was prol)ably less than in 1!J14. Dividend- on the common 
stock have not been resumed, although the third and 
fouith (|uarters showed a very considerable increase in 
earnings. 

Ko I! i; 1 G .\ Co I" .V TU I E.S 

Great Britain has furnished no statement for any part 
of the year. The indications are, however, that the pro- 
<hiction of iron and steel was about the same as in 1914. 

The foreign trade of Great Britain in iron and steel 
for 11 months ended Xov. 30 is valued by the Board of 
Trade returns as follows: 



Exports 

Iron and steel £36.909.10S 

Hardware, machin- 
ery, etc 26,917,658 



Imports Excess 

£9,870,138 Exp. £27,038.965 

13.612.477 Exp. 13,305.181 

Exp, £40.344.146 
Exp. 63.039,339 

Actual quantities of iron and steel exported were 3,- 
678,831 tons in 1914 and 2,944,838 tons in 1915; im- 
ported, 1..j5:,'213 tons in 1914'and 1,090,400 tons this 
year. 

For Belgium and France, owing to the disorganization 
wrought by the war, no statistics are available. Germany 
has kept its production up to about two-thirds of a normal 
year, the make of pig iron for the 10 months ended 
Oct. 31 having been 9,741,871 tons and that of steel 10.- 
832,039 metric tons. 

The production of Canada, like our own. .showed a 
large increase ovci 1914. much of this being due to work 
on munitions of war. 

In Australia a notable event was the completion of the 
first important blast furnace and steel works in th,' loun- 
trv, built by the Broken Hill Proprietary Co. and success- 
fully started in September. 



PMteb^rElhi Iromi s^midl Steel Me^rHieil^ 



By B. E. V. LuTY^ 



In no year has the steel industry ever made such a 
remarkable record as in 191.5. The high prices reached 
in the year find their parallel in the general level attained 
ill 190G and 1907, but the prices then w'ere reached by a 
slow and steady movement. In 1903 prices were some- 
what higher than prevailed at the close of 1915, but that 
price level also was attained by relatively slow .stages. 
Jn 1899 prices rose as rapidly as in 191."), and reached a 
materially higher level, but there was the very important 
difference between 1899 and 1915 that substantially full 
l>roduction occurred for almost two years preceding. 
During 1915, on the other hand, the rale of pig-iron 
l)roduction more than doubled and tiie rate of steel pro- 
duction fully tripled. Pig-iron prices scored an average 
advance of more than $5 a ton. Bessemer billets advanced 
about $12 a ton, while finished steel products generally 
scored an average advance of somewhat more than $12 a 
ton ; and if the premium prices paid toward the close of 
the year for early deliveries be taken into aerimnt. the rise 
in steel products w^as still greater. 

Action in the steel market was so rapid and at times 
.-o violent that it was impossible to discern clearly the 

•627 Oliver BuildinK, Pittsburgh, Penn. 



underlying forces at work, and at the close of the year 
it was evident that the judgment pronounced earlier in 
the year, that the war demand for steel was diielly 
responsible for the activity, was largely at fault. Perhaps 
the truer j)ersi)ectivc obtainable a year or two hence may 
alter the views obtaining at the close of the year as to 
the fuiidamentiil factors causing such remarkable develop- 
ments. 

To trace briefly, as a prelude to an attempt at analysis 
of causes and real conditions, the course of the iron and 
steel markets during the year, it may be said that iu 
December, 1914, pig-iron prices were the lowest since 
1904 and fini.<hed-steel prices, by a small margin, the 
lowest since the fore part of 1899. Pig-iron production 
v.as at a rate slightly less than one-half the capacity 
;iiid .<teel jiroduction at a rate not more than one-third 
the capacity. During the first half of the year pig-iron 
lUutuated narrowly, not definitely advancing until July, 
while the rise in the second half of the year amounted 
to more than $5 a ton. Steel prices advanced slightly 
during the first half of the year, by about $2 a ton, 
then beginning to ri.se more rapidly, while the advances 
in the last (luarter of.theyear inav be di'<iribed as n>ally 



72 



THE KXGIXEERIXG 



.MIXIXK JOriJXAL 



101. No. 2 



violent, no such rate of advance havinj: prevailed, in a September the mills l)egan to fall behind in deliveries, 
period of three months, since the memoral)le year 1890. Tbe market then Ijei-anie intenselj- excited, anil there was 
Production of pig iron increased moderately during the a wild scramble for material, ^iany buyers were securing 
first half of the year, while steel production increased deliveries perfectly satisfactory, but some were not and 
more rapidly. In tlie third quarter production of both their cases attracted attention, while the cases in whiili 
pig iron and .steel increased steadily until a rate fully deliveries were sati.sfactory did not. Some fresh con- 
equal to capacity wa.s reached. Tlie year had opened witli sumptive demand arose, particularly on the part of the 
accumulations of pig iron at steel works, the consumption railroads, and this denumd coming to mills already over- 
of the stocks accounting for the (hft'erence between the sold necessarily made the situation from the mill view- 
rates of pig-iron and steel production increase resi)ective- point extremely strong. 

Iv. The view entertained quite generally in June, that 

Demand for pig iron and steel, as expressed in actual almost the sole support of the steel market was the war 

market purchase.*, is not always in exact relation to demand, may possibly have been a correct view at the time, 

actual consumption requirements. In the case of steel but it certainly was not correct as to conditions olitain- 

products, stocks, if carried at all, are carried by buyers ing in October. Steel production increased until Sejitcm- 

rather than by producers. According to the buyers' ber or Octoljer, when the capacity rate was iiicrensed. Ijut 

expectations as to the future, these stocks are decreased steel exports were heaviest in August, decreasing in 

or increased, and thus as a rule the steel market is either September and .-itill f .irther in October. The Octolx'r 

languishing or definitely advancing. Stocks in buyer.s' exiwrts of tonnage products as re]X)rted by the Goveru- 

hands had been liquidated to an extent in 1913. Init ment, plus a liljeral estimate of the steel made for indirect 

in 19U the liquidation was made complete. The situa- exports, including shells, niachiiieiT, railroad rolling 

tion was ripe for a buying movement, l)ut the trade did ttock, etc., did not account for as much as 20% of the 

not expect an important buying movement as long as steel-mill output in that month, so that domestic buyers 

the war lasted. It had seen five months of war, during were taking more than ?•■)% of the output for eventual 

which no good things developed. Prices had reached surh domestic consumption, and all exports, direct and imliiert. 

a low ebb in December, 1914, however, that some buy- to the belligerents and to neutral countries amounted 

.VVKUAGE PRICES AT PITTSBIRGH. l'.)l.j 

• Pig Iron Suvl . • Xiil..^ 

niiiik Wire C-iii 

No. 2 Fcrro- Bcss'*nier Shwts per ikt 

B<»ssi^mer P.asic Foundry mangancsf* Billets Beams Pbtes Bars No. 28 Keg Kep 

January $14 49 S13 45 $13 70 $70 30 S19 25 1 10c. 1.10c. 1 10c. 1.80c. 1.54c. 1.5.V 

February 14. .t5 13.45 13.70 70.30 19.25 1.10 1.10 110 l.SO 1 .Vt 1 .V. 

March 14 .t5 13.45 13 70 SO. 30 19 :« 1.15 1.15 1 15 l.SO 1 tiO 1.5.-. 

April 14.55 13.45 13 70 80 30 19.50 1.20 1.20 120 1.80 1.57 l.W 

May 14 r.l 13 60 13 70 93 30 19. .iO 120 1.17 120 1.80 1.55 1 .w 

June 14.70 13 (57 13 65 102 30 20.00 1.20 1.15 1 20 1.70 1.55 1 .V, 

July 14 94 13 91 13 67 102 30 21 40 1.25 1 22 1.27 1.74 1.58 1 .-.5 

August 16.01 15 31 14 66 102 30 23 50 1.30 1.26 130 1.85 1.61 l.V, 

September 10 .SO 15 95 15.45 109. SO 25 50 1 :« 1.33 135 1.91 1.69 l..\s 

October 16.95 15.96 15.53 107.30 26 00 144 1.42 1.43 2.aj 1.78 1.65 

.N'ovember 17.57 10.47 16.77 102 30 20 20 103 1 63 1 63 2.:«) 2 87 1 . 72 

December... 19.95 l.s 95 18.95 102.30 30 1)0 175 175 175 2,50 2 00 1 )n7 

Year 815.81 $14 SO $14.77 $33.59 $22 45 130 120 131 192 lUO 1«<I 

Yearl914 14. S9 13.76 13.89 57.79 20 03 1 10 1.14 1 15 189 157 1 .'.7 

Prices of pig iron, fcrromaDganese and billets are per ton, 2,240 lb.; of steel product.^, per lb.: of nails, per 100 lb., base. 

ing was induced, encouraged by the improved financial to less than 2.1%. It diil not follow, however, that all 
conditions produced by the establishment of the new the material taken by domestic buyers was for immediate 
banking system, Nov. 10, 191 1, and tlie large balances in consuinjjtion. As current ))rices were high and most 
foreign trade that were beginning to pile u]) in favor of buyers were provided with relatively low-priced contracts, 
the United .States. it was natural for them to specify freely. The year 
The steel mills were quick to make the most of the closed with some material in stock and some material 
situation and began advancing prices, frequently setting on order that was not immediately required. On the 
a date upon which they would establish an advance, other hand, there apjieared to be a large unsatistie.l 
Jiuyiiig was thereby encouraged. Orders for war material ( onsuming demand. There was reason to believe th.ii 
were placed in constantly increasing volume, x^t first tiie latter influence wouhl easily pre]ionderate, but the 
the reports of these orders were thought to be greatly market had advanced too rapidly to jjerniit it to be re- 
exaggerated, but by the middle of the year it had to i)c ganled as certain that domestic consumption would be 
admitted that a very large volume of trade had come to maintained at a full rate under high prices, 
the Ameriian steel industry by rea.son of the war. The Pig-iron ])n)duction in the first half of 1915 was 12,- 
sleel mills were then operating at about 90% of capacity, 233,791 gross tons, and production in the second half 
The opinion of the majority of buyers was that the entire <an be estimated at 17,700,000 tons, making 29,900.000 
backlwiie of the steel market was the war demand, and tons for the year. At the close of the year ]iig iron wa> 
in consequence they did not have much confidence in being jjioduced at the rate of 38,000,000 tons a year, 
the situation. In .July and August, however, they came steel ingots at about 38.000,000 tons, steel ca.«tings at 
to realize that even though the demanil were merely a about 1.000,000 tons and finished rolled .steel at fully 
war demand, it might pf)ssil)ly fill the mills and make 28,000,000 tons, 
it difficult to obtain deliveries, jmrticularly since very y. 
fanc-y prices were freelv i)aid for war material. They <irnphHe Kxporta from rryion <i:cro.asp.i fn.m f..i,9:ir,.i-,s4 ii.. 

■ ' ., ; , ... , . 1 i In lOl.t to ni.STI.itH ll>. in 19H. The chUf i-aiK-^cs for the loss 

began to specify very freely on their contracts, and to „. re tl,.- eml.ar«« place.l «„ exports fn.m Ceylon :.n<l the com- 

.«eek contracts for j)eriods farther ahead, wheieby in iiiiiti.m of .M.i(hii;:.scar praphite. 



J:uiuarv 8. I!) 10 



TiiH K\(;ixi-:i-:i;i.\'(; c- mi.vixc jorifyAL 



:3 



ClhFOiniollogV ©f Mimmitf for 1915 



JAMARY 

Jan. 7 — Federal Distiict Court at San Francisco declared 
Arizona's alien law to be unconstitutional. — German Zink- 
liuttenverband dissolved owing to closure of some of the 
UelKian works. 

.Ian. 11 — Strike started in Miami and Globe. 

Jan. 12 — The Zinkhiittenvereinigung organized to take the 
place of the old Zinkhiittenverband. 

Jan. l.T — Copper Producers' Association dissolved. 

Jan. 24 — Strike in Globe-Miami district settled; work re- 
sumed at increase in wages. 

Jan. 2«i — United States Steel Corporation passed dividend 
on common stock. 

Jan. 27 — .'Announcement of raise in wage scale at Bisbee 
following higher price of cojjper. 

FEBRIARY 

Feb. 1 — Bristol mine. Crystal Falls, Mich., resumed opera- 
tions. — Inland Steel Co. assumed control of Armour No. 1 and 
No. 2 mines on Cuyuna Range. 

Fell. <i — Serious cave in inclined shaft, Gagnon mine, Dutte. 
resulted in death of tour men and slight injuiies to two. — 
Calumet & Hecla and its suljsidiai'ies resumed work on full- 
time basis. — Germany put embargo on spelter. 

Feb. 13 — Calumet & Hecla announced resumption of divi- 
dends. 

Feb. IS — First 1,500-ton unit of Alaska-Gastineau mill at 
.Iiineau started. 

Feb. 2:? — Five miners arrested for high-grading in the 
Cripple Creek district, tliis being the beginning of a new 
crusade against this practice. 

MARCH 

Mar. 1 — Increase of wages granted by the Quincy Min- 
ing Co. — Hoisting of ore resumed at Ashland mine, Gogebic 
liange. — Mountain Copper Co. resumed operation of its 
smelter.v at Martinez. — Xewpoit mine, Michigan, resumed full- 
time work. 

.Uar. 2 — Explosion in the Layland mines (No. 3) of the 
.\ew River & Pocahontas Consolidated Coal Co.. near Quin- 
nimont, W. Va., entombing about 160 miners; 47 men sub- 
sequently rescued. — Decision rendered in favor of Ontario 
Mining Co. in its suit against the Stewart Mining Co., of 
Idaho, for trespass. — Metal mining property of Golden Cycle 
Mining Co. sold to Vindicator Consolidated Gold Mining Co. 
tor $l..-)00,000. 

Mar. S — Persons unknown dynamited and destroyed Green 
Copper shaft of Anaconda company at Butte. — President Wil- 
son signed Foster bill providing for the establishment and 
maintenance of 10 mining-expei-inient stations and seven 
mine-safety stations in addition to those already established. 
— Sale of minority interest of Edgar Zinc Co 

.Mar. 9 — Judge Van Fleet in United States District Court 
rendered decision that the Mammoth Copper Co.'s plant at 
Kennett was doing no damage to the agricultural lands; 
company has resumed work. — New electric haulage system 
of .Alaska Juneau mine started. 

Mar. 13 — Strike among the zinc smelters in Kansas and 
Oklahoma. 

.Mar. 13 — St. .loseph Lead Co. increased production to !)fl'; 
of normal. 

.Mar. IB — Mountain Copper Co.'s new concentrator at Kes- 
wick, Calif., started. — Cuyuna I'Jlo shipping season inaugu- 
rated. 

.Mar. 17 — Twent.v-stamp mill at Plumbago mine, .Alle- 
ghany, Calif., destroyed by file. — Compromise effected in strike 
of workers in Kansas and Oklahoma zinc smelteries. 

Mar. IS — Crushing began at new mill of Rochester Mines 
Co., Nevada. — Mining and Metallurgical Society medal award- 
ed to I'rof. R. H. Richards. 

Mar. 22 — Snowslide at Howe Sound, n. C, swept away 
several bunkhouses at Britannia mine; ."i.'i l<illed and many in- 
jured. 

.M'RIL 

.■\|ir. 1 — Spain placed emliargo on iron, steel, tin, sulpluir, 
aluminum, antimony, mini lal oils and ammonia. 

\ltT. 7- — Alask.a Juneau Gold Mining Co. offered 100,{10{i 
shaies capital stock at $10 per share. 

Apr. 10 — President Wilson announced the route of Uie 
.Ahiska Railway. 

Apr. 12 — Alaska Juneau stock offering oversubscrilieil four 
times and trading on Curb begun at $1S to $1:-| per share. 

Apr. 1.%— Worlv resumed at East Butte mill. 

\pr. 17 — No. 1 diedgi- of Canadian-Klondyke l)eBan oiier- 
afions. 



Apr. 10 — New pumping machinery for draining downtown 
district of Leadvllle, Colo., started operation. 

.\pr. 22 — Spelter at St. Louis passed 10c. 

.\pr. 21» — Work begun at Ship Creek on construction of 
Government railroad in Alaska. 

-MAY 

May 1 — Crushing plant of Oliver Iron Mining Co., at 
Escanaba, Mich., started operations. — Lake Superior Hema- 
tite property of Oliver lion Mining Co., Ishpeming. closed 
down and abandoned. — Calumet & Hecla company granted 
increase of 10% in wages of surface and underground men. — 
Decision by Judge Bourquin of the Federal Court in suit 
against the Anaconda company provides that the Alice mine 
property, sold some time ago to the defendant, shall again be 
offered for sale. 

May » — Stamp mill at White Pine mine, Ontonagon, Mich.. 
started regular operation. — Alaska coal lands case nol-prossed 
at the request of the Attorney-General; said to be on account 
of lack of evidence. — Bullwhacker Copper Co., Butte, started 
operations after a long shutdown. 

May 10 — Decision rendered by United States Supreme Court 
in favor of the State of Georgia in its suit against the 
Ducktown Sulphur, Copper and Iron Co. for an injunction to 
prevent the company from allowing fumes to diffuse over the 
state border. — First cargo, 6.000 tons, of Broken Hill zinc 
ore delivered at Bartlesville, Okla. 

.May 17 — New Washoe acid plant of Anaconda company 
put in commission. — No. 1 reverberatory at International 
smeltery, Miami, filled with calcines for first time. 

May IS — Chile Exploration Co.'s plant at Chuquicamata 
started operations. — New record established at Duluth docks 
by loading 10 boats %vith 86,000 tons of ore in one 10-hr. 
shift. 

May 19 — Anaconda stockholders voted to change par value 
of stock from $25 to $50. 

.May 26 — United Verde plant at Clarkdale started. 

May 2S — Utah, Nevada, Ray and Chino declared dividends: 
all raising rates except Ray, which was a return to the rate 
paid before passing its dividends. — Spelter at St. Louis pas.sed 
20c. 

Jl\E 

June 1 — Lower Lake freight rates on iron ores became ef- 
fective. 

June 2 — J. P. Morgan & Co. announced purchase of $10.- 
000.000 of 10-year R'/, bonds of Kennecott Copper Corpora- 
tion. — New iron and steel works of Brolien Hill Proprietary 
Co., Ltd., at Newcastle, Australia, otficiall.v opened. 

June S — Decision adverse to the Government in its suit 
to dissolve United States Steel Corporation rendered by the 
Federal District Court at Trenton, N. J. 

June 4 — Prompt spelter at 27c., futures at 24@27c.; highest 
on record. 

June 7 — Amalgamated stockholders' meeting in Jersey City 
voted for dissolution of company. 

June 9— rOhio Copper Co. leased mine and mill to General 
E.xploration Co. — The Tonopah Merger and Tonopah Victor 
mines voted to merge with Tonopah Extension. — Electrolytic 
copper touched 20c., regular terms; Lake copper quoted at 
23c. 

June 10 — Cave-in in Longacre Chapman mine, Joplin dis- 
trict, buried six men; four rescued after 120 hours' imprison- 
ment. 

June 12 — Calumet & Hecla distributed bonus of over $500.- 
000 among nearly 10,000 employees. — Lead touche,' Sc, but 
sales at that price were small and market immediately col- 
lapsed. 

June 14 — Stores in Butte forced to declare holiday on an- 
niversary of big Butte labor riot in 1014 on account of action 
by clerks' union and defection in employers' association. 

June I.'i — Last spike driven in Mascot i<t Western Ry.. Ari- 
zona, connecting Mascot copper mines with Southern Pacific 
Co.— .Attorney General of Missouri filed charge against zinc 
smelters. 

June Itt — Greene-Cananea resumed operations at mine ami 
smeltery v/ith two blast furnaces and one reverberatory. — 
Plant of La Harpe Spelter Co., .Altoona. Kan., taken over by 
United States Smelting. Refining and .Mining Co. 

June 17 — United States Steel Corporation announced its 
plan to build zinc works at Donora, I'enii. 

June IS — First section of Ohio copper mill started by 
Iess<e. — First copper produced at Cnnanea ;ifter long idle- 
ness. 

June 20 — .Anglo-Colombian dredge No. 1 launched in Con- 
rioto River. 



74 



THE ENGINEEEING &- MINIXG JOUIJXAL 



Vol. 101, Xo. 



June 22 — Disruption of the International Lead Convention 
owing to secession of the Australian producers. — Construc- 
tion of Donora zinc plant started. 

June 23 — First copper made at Chuquicaraata. 

June 24 — Success Mining Co., Idaho, changed hands by 
sale of 1,100,000 shares of stock for ?1 a share. 

June 28 — Strike of zinc miners in Joplin district. Missouri. 

June 29 — Portland Gold Mining Co. given possession of 
.Stratton's Independence. — First section of Inspiration mill put 
in operation. 

June 30 — Aliarai increased its dividend to 75c. quarterly. 

JtlLV 

July 1 — New wage scale agreed on by miners and mine 
operators of Joplin. — New "workmen's-compensation law of 
Montana went into effect. 

July 7 — New Jersey Zinc Co. increased its capital stock to 
$35,000,000. 

July 12 — Striking miners at Joplin, Mo., returned to work. 
— Dr. Joseph A. Holmes, Director of the United States Bu- 
reau of Mines, died. 

July 15 — Business section of Valdez, Alaska, destroyed by 
fire; loss, $500,000. — Coniagas Mine, Cobalt, Ont., celebrated 
the completion of a decade of mining. 

July 17 — Property of Iron Mountain Tunnel Co., Montana, 
purchased by Federal Mining and Smelting Co. 

July 20 — Ontario government appointed a commission to 
inquire into the feasibility of refining nickel ore entirely 
within the province. — Work commenced on a 1,300-ft. tunnel 
to carry water from Upper Annex Lake to provide extra 
power for the operation of the Alaska-Gastineau mill at 
Thane, Alaska. 

.July 21 — New Jersey Zinc Co. paid stock dividend of 250% 
amounting to $25,000,000. 

July 26 — Beginning of suit of the North Star Mines Co. 
vs. Empire Mines and Investment Co. 

July 30 — Receivers appointed for Ohio Copper Co., follow- 
ing suit of Empire Trust Co. as trustee under the mort- 
i<age bond. 

July 31 — Books of the Amalgamated Copper Co. closed, 
thus terminating its official existence. — Strike at Aluminum 
Co. of America plant. Massena, N. Y. 

-\U«CST 

Aug. 1 — Workmen's-compensation law went into effect 
in Colorado. 

Aug. 5 — Dredge of the Empire Gold Dredging Co. in the 
Leadville district. Colorado, launched, this being the first 
dredge to operate in that district. 

Aug. 13 — Stocks of Belcher, Crown Point and Yellow 
Jacket dropped from the official list of the San Francisco 
Stock Exchange, these companies having been merged as the 
Jacket-Crown Point-Belcher Mines Co. 

Aug. 15 — Fire destroyed portion of the town of Upper 
Rochester, Nev. 

Aug. 18 — Spelter at 9V4®10>^c. 

.Vug. 21 — E. W. King Dodds reported to have made first 
discovery in Kowkash district, Ontario. 

Aug. 26 — Zeila mine, Jackson, Calif., sold to Kennedy Min- 
ing and Milling Co. — Hoisting plant of Victor Consolidated, 
near Mammoth. Utah, destroyed by fire. 

Aug. 27 — Vannoy II. Manning appointed Director of the 
United States Bureau of Mines. 

.Vug. 28 — United Verde smeltery at Jerome. Ariz., closed. 

.\ug. 31 — Explosion at Orenda mine of Merchants' Coal 
Co., at Boswell, Penn.; 19 killed. — Petition filed to dissolve 
Tintic Smelting Co. 

SEPTK.MDKR 

Sept. 1 — Price of silver went to 46 '4 c, the lowest on record. 
— Sterling exchange went to 4.51c. 

Sept. 2 — Crushing started in Nevada-Douglas mill. 

Sept. II) — Final decree of the Circuit Court filed at Tren- 
ton. N. J., dismissing suit against the United States Steel 
Corporation. 

Sept. II — Nf-chi dredge launched. 

Sept. 12 — Strike of miners at Clinton and Morenci. Ariz. 

Sept. 14 — Investigation of alleged zinc-smelting trust In 
Missouri started at Joplin. 

Sept. I.-,— Holdings of Pittsburgh & Lake Angelina Co. 
sold to Cleveland-Cliffs Iron Co. 

Sept. n; — Meeting of American Institute of Mining Engi- 
neers In .San P'ranclsco. 

Sept. 20— Opening meetings of American Mining Congress 
and of International Engineering Congress, at San Francisco. 

Sept. 21— Canadlan-Klondyke dredge No. 2, which sank In 
1914, righted and restarted. 

Sept. 82 — National Association of Mining and Stock Brok- 
ers organized at .San Francisco. 



Sept. 2.'i — Old board of directors of Northport Smelting 
and Refining Co. resigned and new board elected. 

Sept. 28 — Unusually severe collapse of ground in Village 
Main Reef mine, Transvaal; 3 killed and 27 injured. 

OCTOBER 

Oct. 3 — Arizona militia ordered to Clifton on account of 
strike disorders. — Crushing begun in mill of United States 
Gold Co., Boulder, Colo. 

Oct. 9 — Derry Ranch dredge, near Leadville, Colo., went 
into commission. 

Oct. 11 — Commencement of suit of Elm Orlu vs. Butte & 
Superior. 

Oct. 13 — Pilares mine of Moctezuma Copper Co. and the 
concentrator at Nacozari, Sonora, closed down. 

Oct. 14 — Production of electrolytic zinc begun at Anaconda, 
Mont. 

Oct. 18 — Stockholders of Tennessee Coppe.- Co. approved 
the issue of $3,000,000 first-mortgage 10-year convertible 
STr bonds. — Strike at Thetford mines. Quebec. 

Oct. 19 — Carranza government in Mexico recognized by the 
United States. — Explosion of dynamite at Granite Mountain 
mine, Butte, Mont., 16 men killed. 

Oct. 20 — First spelter made at Donora, Penn. 

Oct. 22 — Initial carload of potash shipped by Mineral 
Products Co., Marysvale, Utah. 

Oct. 2;j — Stockholders of Southern Aluminium Co. voted 
to dissolve *he corporatior 

Oct. 25 — Operations suspended at C,".:.anea owing to cutting 
of railway by Yaquis. 

Oct. 26 — Beginning of strike at Silver King Coalition mine. 
Park City, Utah. 

XOVEMDER 

!Vov. 1 — Canadian Copper Co. adopted eight-hour day for 
all men at smeltery and shop and granted increase to men 
in mines working on an hourly rate. — Gaylord mill Cripple 
Creek, burned to the ground. ^U. S. Supreme Court decided 
that Arizona anti-alien law w^as unconstitutional. 

Nov. 2 — Strike at Thetford mines, Quebec, settled, 

Nov. .3 — Utah Leasing Co.'s flotation plant started. 

Nov. S — Concentrator of Arizona Copper Co., Clifton, Ariz., 
partly destroyed by fire. 

Nov. ii — Strike at Nichols copper refinery. — First mangan- 
ese steel produced in Canada at Wabi Iron Works, Ontario. 

Nov. 9 — Strike at Silver King Coalition mine settled. 

Nov. 10 — Alice mine, Butte, reverted to Anaconda company, 
no offers having been made when offered at public sale. 

Nnv. 11 — Mill of National Copper Co.. Idaho, started oper- 
ation. 

Nov. 14 — Law enacted in Peru levying export duty on gold, 
.silver, copper and ores, with some exemptions, and on borax 
and petroleum. 

Nov. 16 — .Strike at Nichols refinery settled. — Explosion in 
mine of Northwestern Improvement Co.. at Ravensdale. 
Wash.; 34 men entombed, of whom three were rescued. 

Nov. 17 — -Announcement of Kennecott-Braden consolida- 
tion. — New York & Honduras Rosario Mining Co. celebratt^d 
35th anniversary of its operations.. 

Nov. 22 — Federal investigation of Clifton strike begun. — 
Villa reported di-iven out of Cananea. 

DECE.IIBER 

Dec. 1 — Nevada Packard mill, Rochester. Nev., started 
operation. 

Dec. 8 — Increase In dividends by Utah. Chlno and Ray; 
.N'evada Consolidated declared extra dividend of 12>^c. — Mid- 
vale Steel and Ordnance Co. purchased Buena Vista Iron ('■ 
property In Cuba. 

Dec. 14 — Announcement that Anaconda will build electrv 
lytic zinc plant at Great Falls. 

Dec. 17 — Fire at works of Magnolia Metal Co., Matawaii 
N. J., which partially destroyed the plant. 

Dec. IS — Villa announced his intention to leave Mexii ■ 

Dec. 20 — Special meeting of stockholders of Canadian Min 
Ing and Exploration Co. to authorize surrender of charter aim 
dissolution of assets. 

Dec. 22 — British Government closed contract with Ana- 
conda and A. .S. & R. Co. for 60,000 long tons of copper, to li' 
delivered during 1916, at about 20c. per lb. 

Dec. 24 — United States Court granted petition of Detron 
Copper Mining Co. tor order restraining strikers at Clifton 
from Interfering with assessment work. 

Dec. 27 — Opening of second Pan-American Scientific Con 
gress at Washington. 

Dec. 28 — Anaconda Increased dividend. — IT. S. Smelting, Re- 
fining and Mining Co, and Greene Consolidated resumed pay- 
ment of dividends. 

Dec. 20 — Qreene-Cananea resumed payment of dividends. 



Jnnuarv S. lOK. 



THE ENGTNKERINd >> MIMN'c .lOI'llXAL 






niplfti-il installation 



',f ih> 



AInNkn Gold, Juneau. AlasUa 
St fi, 000-ton unit of its mill. 

Williiini Miirdii, ICiiik, Alaska, ootiipletert (iO-ton cyaniilc 
plant (luiinK snninici ; cost, $5,000. 

(;riiiiitf (;ol<l, Iloho Bay, Poi-t Wells. Alaska, constructoil 
t)5-ton mill, conipiising 10 stamps ami one 2ii.ton l^ane mill, 
foi- crushing unit; total cost, $20,000. 

AliiMka Jiineiiii, Juneau, Alaska, announced that OeorRe O. 
Hiadliy had been i-nsaK^'d to design and supt-ivise construc- 
tion of S.OOO-tOM mill, estimated to cost, together with hydro- 
electric i)0\ver plant, etc., $4,000,000. 

•tliami CaiiiixT, Miami, Gila County, Ariz., remodeled con- 
cintiatoi-. incieasins capacity from 3.000 to 4.200 tons per 
day. at cost of $.'!On.O00. 

CoiiMolidiUrd AriKuiin SnidtiuK, Humboldt, Yavapai County, 
Ariz., in.stalled oil-fired reverlieiatory furnace, IS f t. ■ by 100 
ft,, capacity 250 to 300 tons per day, at a CQSt of $50,000. 
.Also started to erect new crushing and repeiving plant to 
co.st about $70,000. 

Fortiim- >;i:iiii);, Providence. Yavapai County, Ariz., work- 
iiiH on 3u-ton milling plant, to cost about $SO,000. 

Xe»v Cornelia <'».|iiier t'lK, Ajo, Pima County. Ariz., received 
authority from Arizona Corporation Commission to issue 
$(',75,000 of securities for construction Tucson. Cornelia & 
Oila Bend Ry.. connecting mine at Ajo with main line of 
Southern Pacific at Gila Bend. Started construction of 4.000,- 
ton leaching plant. ICstimated cost, $4,000,000. 

.\rixona Copi'ei" <"., Clifton, Greenlee County, Ariz., remod- 
eled Ko. 4 mill at Clifton, to bring capacity up to 500 tons 
per day. also made some changes in No. 6 mill at Morenci, 
whiiii increased capacity of that mill to 500 tons per day. 

■iiiiikrr Hill. Tombstone, Cochise County. Ariz., remodeled 
old 411-stamp jnill to 50-ton cyanide mill and 50-ton concen- 
liate test-mill. 

i'rimoM Cbeniieal C»., Primos. Penn., erected plant for treat- 
njent of tungsten ore at Russelville, Cocliise County. Ariz. 

International Smelting:, Miami, Gila County, Ariz.; smeltery 
built iirimarily to smelt concentrates from Inspiration and 
Miami mines, put in operation. Estimated cost, $2,000,000. 

liliekenstalV A Urann. Crown King, Yavapai County, Ariz.. 
added Marathon mil! and concentrating tables to stamp mill, 
im leasing capacity to 150 tons per day; estimated cost of ad- 
dition and improvements. $10,000. 

Snratoi^a, Crown King, Yavapai County, Ariz., installed 
Ifiit-ton plant to treat obi dumps. 

I'cviatlian MineN, Kingman. Mohave County, Ariz., diawing 
plans for mil! for concentration of molybdenite ores. 

De la Fontaine, .Stockton Hill. Mohave County. Ariz., has 
enlarged mill to treat zinc ores from Shooting Star group. 

Anieriean Molyliilenuni, Peluge Wash. Mohave County, 
.\iiz.. lias erected small mill for treating niolyl>denum ores. 

Superstition, Price, Pinal County, Ariz., lias built small 
mill for treatment of gold ore. 

Snnllower Cinnaliar, Plupnix. Maricopa County. Ariz., in- 
vestigating wet process in 5o-ton plant; estimated cost, 

DiiiineNne Mining' and Hednotion, Duquesne. Santa Ciuz 
County. Ariz., remodeled mil! for installation of flotation 
ei|ui])ment: capacity, 50 tons per day; estimated cost, $20,- 



iiixin. Golconda. Mnhave County, 
iding and flotation plant, 200 tor 



\riz.. completed 
capacity. 



'I'liorkildsen * Mieree, Patagonia. Santa Cruz County, Ariz., 
completed dry concentrator, 10-ton hourly capacity; cost, $20,- 

IIOII. 

Bip Pine Conxolidatod, I'rescott. Yavapai County. Ariz., 
started construction of cyanide plant, SO-ton capacity; cost, 
$50,000. 

(;ray Ka^ie lieiliietion, Mayer. Y'avapai County, Ariz., com- 
I)leling 50-ton leaibing and electrolytic-precipitation plant at 
cost of $00,000. 

I'nited Ka.sterii, Oatman. Mohave County, .Ariz.; at annua! 
1 ' ii'' voted to build 200-ton cyanide plant. Plans under 



< »|i|KT Chief, .lerome, Yavapai County. .\riz.; H; 
V, ;, pineut Co. is erecting .-i 20ii-ton mill. 



He 



Calaverax Cupiier, Copperoi>olis, Calaveras County, addei. 
ball mill, l>oir classifier and thickener, Oliver filter anil othei 
mill eiiulpment to bring capacity up to 200 ton.s per day; 
cost of intprovement, $12,000. 

American 'I'rona, Trona, San Bernardino County, Calif. 
started woi k Aug. IG on first unit of mill, capacity 100 tons 
l)ota.ssium chloriile and 40 tons of borax per 24 hr. at Trona 
estimated cost, including the refinery at San Pedro. $400,000; at 
Searles Lak.- installed 750,000-gal. per day brine-pumping 
plant. 

Stall RroK., Masonic, Mono County, Calif., installed (IO- 
ton. lO-stani]) mill with tube mil! and cyanide equipment: 
estimated cost. $:iO,flOO. 

iHammotli Copper, Kennett, Shasta County, Calif., built 
sorting and concentrating plant for zinc ore; capacity. 125 
tons in S hr., at an estimated cost of $10,000. 

Colnmhia ConNolidated, Nevada City, Nevada County. Calif. 
built and put in operation 10-stamp mill; c:ipacity. 50 tons 
per day; estimated cost, $20,000. 

Melones MiniuK Co., Melones, Calaveras County. Calif., com- 
pleted 450-ton cyanide ijlant for slime treatment of tailings. 

Skidoo Miners, Slsidoo. Inyo County. Calif.. lO-stamp mill 
was enlarge'' by addition of five 1.250-lb. stamns. two Deister 
concentrators, and 40-hp. gas engine as auxiliary to present 
water power. 

Merchants Finance Co., represented by M. Elsasser and 
Henry E. Simpson. New York City, constructed antimony- 
smelting plant at Harbor Industrial City, Calif. Capacity. 
1,000 tons per month; cost. $75,000. 

Pboenix, Randsburg. Kern County. Calif., added five stamps 
to five already in operation and increased size of cyanide plant 
by addition of 25-ton agitator. 

St. .lolius Mines, Vallejo, Solano County, Calif., completing 
4 Scott tile-furnaces to liandle coarse cinnabar ores. 

EngeL-s Copper, Keddie, Plumas County, Calif., addition to 
250-ton concentration plant increasing cai^acit.v to 400 tons, 
includes flotation machinery. Minerals Separation. Ltd.. proc- 
ess. Built 26-ml. electric power line from Butt dam of Great 
Western Power Co. 

Shipsey Mining. Randsburg. Kern County. Calif., completed 
5-stamp mill at King .Solomon mine. 

Union ( oiiper. .Milton. Calaveras County, Calif.. 100-ton 
concentratin,i; jdant increased to 250-tons; includes flota- 
tion cells. 

IVatomns, Natoma. Sacramento County, Calif., completing 
reconstruction No. 4 dredge equipped with two tailing- 
stackers and double-deck tail sluices, tor ledaination of 
ground coincident with dredging. 

IJert Mountain >lagnesite, Livermore, Alameda County. 
Calif., completed three calcining kilns and constructed new 
road. 

IJutch-App. Jamestown. Tuolumne County. Calif., comple."- 
ing Iminovenients to stamp mill and installation of tube mill. 

Trinity AsheMlos, Castella, Trinity County, Calif., coni- 
Iileted 12 ml. wagon road. 6'i grade, cost about $45,000; saw- 
mill, capacity 25.000 ft. lumber in 24 hr., and 100-ton rock 
crusher. 

Porterville MaKneslte. Tulare County. Calif., completed 
milling equipment, 100-ton per day capacity. 

Cerro (iordo Mines, Keeler, Inyo Count.v. Calif., completed 
Inicket tramway 29.000 ft. long, capacity 100 tons in 24 !>r. : 
electric power line contracted for to replace steam. 

Siskiyou Syndicate, ICtna, Siskiyou County, Calif., com- 
pleting 10-ton stami) mill; and ditch for carrying water. 

niB ClilV. ICtna. Siskiyou County. Calif., completed sawmill 
and cut lumber for tramway 7.700 ft. long, and surface build- 
ings, mill, otiice and boarding house. 

Alpine, I'lymouth, Amador County, Calif., completing new- 
steel headframe. carpenter and machine shops. 

Mountain Kinu Mininu:, Mountain King. Mariposa County. 
Calif., coinpletod ;f0-stamp mill equipped with classification, 
concentiatlon ami regrinding machinery, and 400-hp. hydro- 
electric plant. Caiiaelty of mil!, 150 tons per day; cost. 
$50,000. 

Ash Creek >lining. Honiliiook. Siskiyou County. Calif. 
cmpleted 'I-slanip mill; capacity, IS tons; cost. $fi.0OO. 



THE ENGINEERING &- MINING JOURNAL 



Vol. 101, No. 2 



Pittsburgh Liberty. Masonic. Mono County. Calif., mine and 
mill leased by Sarita Mining Co. and new macliinery installed, 
including 10 stamps, tube mill and cyanide equipment, for 
capacity of 60 tons per day; cost, between $15,000 and $20,000. 

Oro AVater, Light and Power, Clements. San Joaquin 
County, Calif., constructed and started up 6-cu.ft. bucket 
dredge on Mokelumne River; capacity. 125.000 yd. per month; 
cost, $125,000. 

Field's Process Smelter Fnme.s, Redding, Shasta County, 
Calif., expects to complete smelter fume-handling plant. 50- 
ton capacity, Jan. 1. 1916; estimated cost, $45,000. 

Valley Pipe Line completed oil pipe line from Coalinga to 
Martinez, Calif., carrying capacity, 25,000 bbl. per day; cost, 
$4,500,000. 

Laurence Gardella, Clear Creek, Shasta County, Calif., built 
dredge; capacity, 125.000 cu.yd. per month; cost, $100,000. 

Walker Mining. Portola, Plumas County, Calif., completed 
half of fiist unit. 100 tons flotation plant, at cost of $60,000. 

BruiiNwicli Consolidated Gold, Grass Valley, Nevada County. 
Calif., built 40-stamp mill; capacity, 120 tons per day; cost. 
$40,000. , 

Young .Vmeriea. Sierra City, Sierra County. Calif., recon- 
structed 160-ton cyanide plant at cost of $12,500. 

Empire, Grass Valley. Nevada County, Calif., completed 
60-stamp mill and 300-ton cyanide plant. 

Delta Consolidated Gold. Bayles. Shasta County. Calif., com- 
pleted 50-ton cyanide plant at a cost of $35,000. 

Paeifle Mineral Projiucts, Los Angeles. Calif., completed 
150-ton fine-grinding, lixiviating, pulverizing and air flotation 
plant; estimated cost. $150,000. 

Harvard. Jamestown. Tuolumne County, Calif., built 150- 
ton O'anide plant. 

Victor Power and Mining. Knob. Shasta Counly. Calif., 
added $60,000 equipment to present mining and miHiiiK plant; 
capacity, 250 tons per day. 

Original .Vmador Consolidated, Ama<1or City. Amador 
County. Calif., built new milling plant; twenty 1,000-lb. 
stamps: capacit>', 300 tons per da.\". 

L'niteil States Gold Corporation. .'!uKar Loaf.s. Boulder 
Count.v. Colo., completed equipinvnt of 150-ton cyanide and 
leaching plant — cost $150,000 — by addition of 50- to 60-ton 
roasting plant at cost of $15,000. 

Gold Hill .Mining, Left-Hand Ci eek. Boulder County. Colo., 
completed 100-ton cyanide plant; cost, $62,000, 

Colorado I tali Minc-s Operating completed 50-ton con- 
centrating and flotation plant at Golden Fleece mine. Lake 
City, Hinsdale County, Colo., at cost of $25,000. 

Ophlr Kange Gold. Ojihir. San Miguel County, Colo., re- 
modeled 100-ton plant at cost of $3,000. 

Amerlenn Mines, Goldhill, Boulder County, Colo., completed 
25-ton unit of 50-ton amalgamation and concentration plant; 
estimated co.st, $2,500. 

Western CliemienI Manufacturing, Penvel", Colo., built new 
roaster plant at cost of $45,000. 

Tomboy Gold, Telluride. San Miguel County, Colo., com- 
pleted 400-ton tailing cyanide plant; estimated cost, $1|30,000. 

Cripple Creek Cyanide Mining and Milling, Clippie Creek, 
Teller County. Colo., wet-crushing continuous-filter cyanide 
plant; 100 to 150 tons' capacity; estimated cost, $70,500, 

Frank Cnley, lessee on Jerry Johnson mine. Ironclad Hill, 
Cripple Creek, Colo., constructed 100-ton cyanide plant. 

Dumont Custom .Mill, Du.nont. Clear ("reek County, Colo., 
Installed 25-ton amalgamation and concentration i)lant at 
coat of $5,000. 

Boulder Tungsten Production, Nederland, Boulder County, 
Colo., installed 30-ton concentration plant at cost of $20,000. 

Down Town Mine, Leadvllle. Lake County, Colo., erected 
and equipped 500-ton plant at cost of $55,000. 

American Ore Flotation. .Sllverton, San Juan County, Colo., 
made Improvements at Animas mill of Garfield Smelting Co. 
and repairs to power plant. Estimated cost, $30,000. 

lona, Sllverton, San Juan County, Colo,, Installed flotation 
unit at cost of $3,000. 

(iold King, Gladstone, San Juan County, Colo., installed 
additional flotation units at cost of $10,000. 

.•innnyslde, ICureka. San Juan County, Colo., made Improve- 
ment to stamp mill. Increased capacity of electrostatic i)lant 
and added flotation unit. ICstlmatcd cost of lmprovement.s, 
$30,000. 

Hamlet Mining and Milling, H.iwaj ilsvllle. San Juan 
County. Colo., adiled conical mill and llotallon unit at cost 
of $8,000. 



-Mears-Willley. Silverton, San Juan County, Colo., added 
flotation unit and lined flume with vitrified tile. 

Silver Ledge, Chattanooga, San Juan County, Colo., re- 
modeled mill at cost of $15,000. 

Boise-Rochester .Mining. Atlanta, Elmore County, Idaho, 
built 100-ton stamp, concentrating and cyanide plant. 

Highland Surprl.se Con.. Kellogg. Shoshone County, Idaho, 
added $2,000 flotation unit to treat slimes from 100-ton mill. 

Reindeer Queen, Mullan. Shoshone County, Idaho, prepar- 
ing to install flotation plant. 

Federal Mining and Smelting, Gem. Shoshone County, 
Idaho, completed 400-ton concentration mill. 

Bunker Hill ..<!; Sullivan Mining and Concentrating Co., 
Wallace. Shoshone County, Idaho, announced plans for 
building $1,000,000 lead-smelting plant, either in Coeur 
d'Alenes or on Pacific Coast. 

Overlook, Atlanta, Elmore County, Idaho, installed 10- 
stamp mill and Bleichert tramway. 

H. E. & M.. Wallace. Shoshone Count.v, Idaho, completed 
100-ton concentration mill including flotation machinery. 

Idnlio-Continental. Porthill, Bonner County, Idaho, started 
construction of bad-concentrating mill, mining plant and 
ti'amway; mill capacity. 250 tons; estimated cost, $55,000. To 
lie completed Mar. 1, 1916. 

Caldwell Chemical. Kvansville, Ind., began work on 100-ton- 
por-iiionth picric-acid plant at Spottsville, Ky. 

Peun Iron. Vulcan. Mich., erected two crushing plants, one 
at Curry and oni- at Brier Hill shaft; total cost, $22,000. 

Isle Roynle, Houghton. Mich., started rebuilding its $150,000 
mill destroyed by flre, Dec. 24, 1914. Capacity, 2,000 tons per 
ilay. 

.Minnesota Steel Co., Duluth. Minn., resumed construction 
on and completed part of plant on which work was stopped last 
year after nearly $10,000,000 had been spent. Total cost when 
completed, $25,000,000. 

Inland Steel Co., Brainerd, Minn., built small concentrator 
at Thompson mine near Crosby. Contracted for 70-hp. elec- 
tric current from local power company. 

Pittsburgh Steel Ore, Riverton (Cuyuna Range), Minn., 
built concentrating mill for iron ore; capacity 3,000 tons for 
single shift; estimated cost, $300,000. 

Cleveland Clill's Iron, Nashwauk, Minn., at Crosby mine, 
built iron-ore washing plant with capacity of 50.000 tons 
crude ore, 30.000 tons concentrates, per month, at estimated 
cost of $100,000. 

Universal Portland Cement, New Duluth, Minn., completed 
cement plant begun in 1013; capacity, 1,400,000 bbl. of cement 
per year; estimated cost, $1.S00,000. 

Uulnth * Iron Range R.H.. Two Harbors. Minn., started 
work on installation of $1,500,000 concrete-steel ore dock, 
to replace old No. 2 wooden dock being dismantled. 

Mattes Bros., Galena. Kan., built new concentrating plant, 
capacity 500 tons in 12 hr.; motive power, natural gas, 150- 
hp. gas engine; cost. $30,000. 

Empire .Mining. Galena, Kan., bought and remodeled old 
Tiwah mill, bringing capacity to 200 tons in 10 hr.; added 
150-hp. gas engine. 

W. H. Wahling, Galena. Kan., built new concentrator, ca- 
pacity 250 tons in 10 hi., and installed 150-hp. gas engine, 
cost, $22,000. 

George .MohIux. Galena. Kan., built now concentrator, t\i 
Iiacity 150 tons in 10 hr.; installed 100-hp. gas engine: com 
$15,000. 

Sparkler. Galena. Kan., built new lead and zinc concen- 
trator-. 4 mi. northwest of Galena, capacity 300 tons per' n* 
hr. ; cost $30,000. 

D. A. Mnnsur, Joplin, Mo., bought Yellow Jacket mill ann 
moved same to Duenweg, Mo., remodeled and enlarged to :!iin 
tons in 10 hr. 

Lucky George, Joplin, Mo., built new concentrator at Hell. 
Center, 3 mi. northwest of Joplin, capacity 150 tons in lo In. 
cost, $17,500. 

George Kruester and AssoolnteH, Webb City, Mo., complcti d 
new lead and zinc concentrator, 300 tons' capacity In 10 hr.: 
cost, $25,000. 

\ew England Mining, Joplin, Mo., built lead-zinc con- 
centrating plant at Klondyke. 4 ml. northwest of Joplin, ca- 
pacity 250 tons In 10 hr ; Installed 150-hp. gas engine, esli- 
matc-d co-.t, $25,000. 

Pleher Lead, Galena. Kan., built two lead-zinc concentrat- 
ing plants at Pleher, Okla., capacity 30n tons each in in 
hr.; Installed gas engine and compressors at both i)lant.«; 



January 8, U)l(i 



THE ENCINKEHINO 6- MIXINf! JorUXAL 



estimated cost, $30,000. Is now building third plant at 
same place. 

.4thle(le Mining, Duenweg, Mo., enlarged mill to 1,000 tons' 
capacity per 24 hours. Installed compressor and 300-hp. boiler. 

Wayland, Galena, Kan., erecting 500-ton concentrating 
plant; estimated cost, ?25,000. 

Stott Itlinine, Duenweg. Jasper County, Mo., built zinc- 
and lead-ore concentrating plant; capacity, 500 tons per 10 
hr.; cost, $40,000. 

La Harpe Spelter. Kusa, Okla., has under construction 10 
furnaces — 400 retorts each. 

Oklahoma Spelter, Kusa, Okla., has 4 furnaces — 400 re- 
torts each — under construction. 

Inter-Mountain Copper, Iron Mountain, Missoula County, 
Mont., built 100-ton copper concentrator at cost of $60,000. 

St. Paul Mont. Mining, Maiden, Fergus County, Mont., 
completed a 50-ton cyanide plant; cost, $45,000. 

Anaconda Copper, Great Palls, Cascade County, Mont., 
completed 2,000-ton copper plant — leaching and flotation — for 
treatment of 15,000.000 tons of accumulated tailings; and 100- 
ton sulphuric-acid plant. Estimated cost of improvements, 
$6,000,000. Also completed copper reflnery, capacity 15,000,000 
lb. copper per month, at cost of $1,350,000. In December broke 
ground for construction of zinc plant to cost $2,000,000 and 
have capacity of 70,000,000 lb. zinc per annum. 

Natural Product.* Reflnine. Jersey City, N. J., manufacturer 
of bichromate of potash and bichromate of soda, is building 
extension to plant at estimated cost of $50,000. 

CosNak Mining, Bland, Sandoval County, N. M., completed 
100-ton cyanide plant at cost of $100,000. 

PinoN Altos M. & M., Pinos Altos, Grant County, N. M., in- 
stalled nn-ton concentrator at cost of $25,000. 

Empire Zinc, Pinos Altos, Grant County, N. M., installed 
150-ton electro-magnetic zinc plant. 

Empire Zinc, Silver City, Grant County, N. M., has com- 
pleted 150-ton concentrator, 9 mi. north of Silver City. 

Chine Copper, Hurley, Grant County, New Mexico, reports 
no new construction during 1915. 

Northern Ore, Edwards, St. Lawrence County, N. Y., com- 
pleted 100-ton mill for concentrating zinc ore to replace mill 
burned in 1914. 

Rochester Mines Co., Rochester, Humboldt County, Nev., 
completed and put in operation 100-ton fine-grinding and 
cyanide mill. Book cost, $87,000. 

Nevada Packard Mines Co.. Rochester, Humboldt County, 
Nev.. completed 100-ton cyanide plant, equipped with crusher, 
rolls, tube mill and zinc-dust precipitation. Cost, $70,000. 

Nevada-Douglas, Ludwig, I. yon County. Nev., constructi'd 
250-ton leaching plant. 

PIttsburKh-Dolores, Rockland, Lyon County, Nev., com- 
pleted 80-ton cyanide mill. Estimated cost, $40,000. 

fieorce AVinBfleld, Reno. Washoe County, Nev., has taken 
option on Boundary Red Mountain Gold Mining Co. in Mt. 
Raker district, Washington, one mile from British Columbia 
boundary and 90 mi. east of Vancouver, and is installing ten 
1.000-lb. stamps and small tube mill foi- regrinding, equipped 
tor amalgamation only. 

Consolidated Nevada-Utah, Pioche, Lincoln County, Nev., 
broke ground Dec. 15, 1915, for erection of 50-ton concentrat- 
ing mill, to cost $35,000 to $40,000. Completion expected Mar. 
15, 1916. 

rioldfleld Great Bend, Re-lnc, Goldfleld, Esmeralda County, 
Nev., installed hoist, compressor and mining machinery, at 
cost of $10,000. 

Vinson Valley, Mason, Lyon Count.v. Nev., reports no new 
construction. 

Colorado-Nevada M. * M., Nelson, Clark County, Nev.. 
erected and put in operation a 75-ton Dorr counter-current 
cyanide pl.ant. 

Techatticnp Syndicate, Nelson, Clark County, Nev., in- 
stalled 40-ton Dorr counter-current cyanide plant. 

.tmalgamated-Pioclie, Pioche, Lincoln County, Nev., com- 
menced work on 75-ton crushing and 50-ton milling plant 
with oil flotation; estimated cost, $35,000. 

Sunset M. and D., Rhyolite, Nye County, Nev., ailditional 
equipment consisting of ball mills, classiflers, etc., to in- 
crease capacity from 50 to 100 tons per day, at cost of $6,000. 

Sultan, Good Springs, Clark Count.v, Nev., installed dry- 
ronrentration mill; capacity. 2."i tons per .s-hr shift: total cost. 
$8,000. 



lidated, Aurora. Mineral County. Nev.. in- 

atus in 500-ton all-slime cyanide plant; cost. 



New Hope, Kagleville, Churchill County. Nev., started con- 
struction of 150-ton cyanide j)lant: estimatid cost, $50,000. 

CjoodsprlnRH Anchor, Jean, Clark County, Nev., installed 
dry-concentration plant; capacity. 50 tons jier 24 hr. ; cost. 
$8,000. 

Yuba I.easinfc and Develop., Pioche, Lincoln County, Nev., 
installed 50-ton concentration and cyanide plant; cost, $30.- 

000. 

nelleville Tailings .Association, Belleville. Esmeralda 
County. N>v.. completed 130-ton cyaniding plant for treating 
'dd tailings, at cost of $30,000. Construction started May. 
1914. 

Klko Prince. Midas. Elko County, Nev., built all-slime cy- 
anide plant; capacity 50 tons; estimated cost. $75,000. 

Monitor-Relmont, Belmont, Nye County, Nev,, completed 
150-ton stamp mill equipped with ten 1,650-lb. stamps, tube 
mills, and oil flotation; capacity, 150 tons per day, cost, $70,- 
000. 

.\ur€>ra <'< 
stalled new a 
$45,000. 

I'nited States Steel Corporation started construction and 
finished one unit of zinc-smelting plant for the production of 
zinc and byproducts, including sulphuric acid, at Donora near 
Pittsburgh, Penn. Estimated cost, $2,500,000 to $3,000,000. 

Good Hope Mining Co., Keystone, S. D.. completed 10-stamp 
mill; capacity 40 tons. Cost, $10,000. 

Honiestnke Mining, Lead. S. D., practically completed in- 
stallation of CI ntral boiler plant, containing 3,600-hp. boilers: 
electric generating station — steam-driven units — 4,000-kv.-a. 
capacity: compound condensing steam hoists for handling two 
G-ton skips from depth of 4.000 ft.; estimated cost, $500,000. 

Rattlesnake .lack. Galena, S. D., equipped with 10-stamp 
mill, Wilfley tables, conical mill and cyanide inachinery; 
capacity, 75 tons per day. 

Mogul, Terry. S. D., installed a second 100-hp. De La Vergne 
oil engine, for purpose of increasing mill capacity to 150 tons 
daily. 

Wasp No. 2, Deadwood, S. D.. installed in mill at Flatiron, 
Wilfley concentrator, jig, ball mill, rolls and full equipment 
for handling 25 tons daily of low-grade wolframite ore; cost. 
$5,000. 

Kcho Gold. .Maitland, S. D., installed prospecting equip- 
ment, including ;;ir compressor, hoist, sinking pump, etc., 
at a cost of $6,000. 

(Golden tiate Mining Co., Grtenhorn. Baker County, Ore., 
completed 35-ton amalgamation plant. Cost. $45,000. 

Imperial, Cable Cove. Baker County. Ore., increased 60- 
ton amalgamation and concentration plant to 100-ton; cost of 
increased capacity, $15,000. 

.Vmcrican Zinc, Mascot, Tenn., erected 700-ton zinc-con- 
centrating mill; estimated cost. $100,000. 

Clinchfield Products .\ssocinti<in, 100 William St., New York 
City, started constiuction of $500,000 plant at Johnson City. 
Ti-nn., for manufacture of lithophone and kindred products. 

I'tali Copper, Bingham, Salt Lake County, Utah, reports 
no new construction during 1915. 

Silver King Coalition, Park City, Summit County, Utah, 
erected a 400-ton flotation plant; estimated cost, $75,000. 

Utah Leasing, Newhouse, Beaver County, Utah, installed 
500-ton plant for flotation of concentrates; estimated cost, 
$50,000. 

United States Smelting, Midvale, Salt Lake County, Utah, 
made 100-ton addition to lead and zinc concentrator and 40-ton 
addition to zinc mill. Also built new custom lead and zinc 
concentrator with capacity of 150 tons. 

Daly Judge. Park City, Summit County. Utah, installed 150- 
on per day Callow flotation equipment. 

Tintic Milling, Silver City, Juab County. Utah, building 
chloridizing and leaching plant; capacity, 300 tons: estimated 
cost, $200,000: to treat local custom ores. 

Utnh-.\pex. Bingham, Salt Lake County, Utah, installed 
250-ton flotation equipment at cost of $22,000. 

Broadwater Mill, Park City, Summit County, Utah, installed 
500-ton water concentration plant for treating old tailing 
dumps. 

Big Four Kxiiloratlon, Park City, Summit County, Utah, 
Iniilt 250-ton concentration plant at .\tkinson, below Park 
City to treat tailings. 

Cnldo, Krisco, Beaver County. Utah, built 200-ton flotation 
mill — t'aliow i)rocess — to treat tailings from tlie Horn-Silver 
mill. 



78 



THE KXGlXKi:RIX(i Jr .MIXING JOURNAL 



Vol. lOJ, No. 2 



United Copper Co.. Chewelah. Stevens County. Wash.; 50 
stamps added, making 74 now in operation. Mill also includes 
oil-flotation process. Total capacity. 235 tons per day. 

Hammond Mininpr Co., Glacier, Whatcom County, Wash., 
reconstructed old milling plant and added modern cyanide 
equipment. 

Lnekr Six Mining. Livingston, Wis., installed 100-ton zinc 
concentrator at cost of $S.2nO. at Dodger mine, near Mifflin. 

Field Jlinine nnd Millins Co., New Diggings, Wis., com- 
pleted 450-ton zinc-concentrating mill. Cost, $30,000. 

Oliver Iron. ShuUsburg. Lafayette County, Wis., built 400- 
ton mill at zinc mine; estimated cost, $S0,000. 

VincRar Hill Zinc constructed three plants, each with a 
capacity of 150 tons per 10 hr., cost $15,000 each, at Kittoe and 
Graham mines at Benton and at Blackstone mine at New- 
Diggings, Wis. 

B. M. B., Mifflin, Wis., built zinc mill at Biddick mine, ca- 
pacity 100 tons per 10 hr.; estimated cost. $S.000. 

Treganza, Benton. Wis., built zinc mill, capacity 100 tons 
in 10 hr. ; estimated cost. $8,000. 

Mc3Iillan, Hazel Green, Wis., built 100-ton mill at McMillan 
mine: estimated cost, $8,000. 

Saxe-Pollard, Linden, Wis., built 100-ton plant at Oilman 
mine, cost S8.000. 

Longhcnry Bros., Benton, Wis., at Longhenry mine, built 
100-ton zinc mill; estimated cost, $8,000. 

Blockhouse, Platteville, Wis.; at Cruson mine building 150- 
ton plant; estimated cost, $15,000. 

31. & H., Platteville, Wis.: at Loomis mine built nO-ton mill; 
cost. $4,000. 

Optimo. Linden, Wis.; at Optimo No. 3 built lOO-ton zinc 
mill at estimated cost of $8,000. 

Stoncr Bros., Linden, Wis., built 50-ton zinc plant; esti- 
mated cost, $4,000. 

K. C. & M., Benton, Wis.; at Wilkinson mine built 75-ton 
plant; estimated cost, $4,000. 

^VlHConsin Zinc, Nevr Diggings, Wis., built Skinner roaster, 
capacity 800 tons of green ore per week; estimated cost, 
$75,000. 

Mineral Point Zinc, Mineral Point, Wis., built new acid 
plant at Mineral Point and is now building Skinner roaster. 

Great Western, Galena, 111., moved and reassembled Brown- 
Croft roaster — Mathey type. 

Galena Refining. Galena, 111. — an affiliation of the Field 
Mining and Milling Co. — is reassembling the Mills roaster 
(Mathey type), at Galena. 

Mclntyre-Porcupine. Schumacher, Ont.. Canada, added new 
150-ton unit to cyanide plant at cost of $35,000. 

TouBh-Oalies. Kirkland Lake. Ont.. Canada, completed 120- 
ton mill and cyanide plant; estimated cost. $127,000. 

3Iiracle, Porcupine, Ont.. Canada, completed mill and cy- 
anide plant. 50 tons' capacity. 

Weedon, Welland. Ont., Canada, installed additional con- 
centrating machinery and 50-ton flotation plant at lead- 
zinc mine near Notre Dame des .\nges, Quebec; concentrates 
to be shipped to company's zinc works at Welland. 

.^Igoma Steel Corporation, Ltd.. Ontario. Canada, extensive 
Improvements made on roasting plant at Magpie mine. Capac- 
ity of drying plant at powdcred-ioal mill was doubled. 

Sebumaeber Gold Mines. Ltd., Schumacher, Ontario. Canada, 
completed 150-ton cyanide plant. Cost. $75,000. 

Cobalt KedDction, Cobalt. Ont.. Canada, completed 300- 
ton concentrator and 175-ton cyanide plant; estimated cost, 
$83.onn. 

Dome llinrs, Ltd., .South Porcupine, Ont.. Canada, .started 
work on addition to pre.xent mill, which has capacity of 2s.nnO 
tons per month; ultimate total capacity 45,000 tons per month. 
Installed underground crusher station and power haulage, 120 
tons' capacity per hr., at cost of $30,000. 

Weedon Zinc, Ltd., Welland, Ont., Canada, completed first 
unit of electrolytic zinc refinery; capacity, 5 tons of spelter per 
day. 

CoDlaBas Mines, Ltd„ Cobalt, Ont.. Canada, completed can- 
vas plant of sn to Pn tons' rapacity at cost of $3,000 and 
cyanide plant of 6 to 8 tons' capacity at cost of $S.000. 

Holllnger Gold, TImmlns. Ont., Canada, added 40 stamps 
and new tube mill to previous equipment of 60 stamps. 

Teek llanbea, Kirkland Lake. Ont., Canada, started work 
on construction of lOO-ton mill and power plant. 



Canadian Copper, Sudbury, Ont.. Canada, has new shaft- 
house, warehouse, machine and carpenter shops at Creighton 
mine completed, and new rockhouse in course of construction 

Canadian Mining and Finance, Ltd., Timmins, Ont., Canii 
has completed construction of central power plant at Gilli' 
Lalie, with four air compressors, each with a capacity of 4,5" 
cu.ft. 

BBXZOL PLANTS 

I nited States Steel Corporation built three benzol pla^' 
— one at Farrell, Penn.. one at Gary, Ind.. and one at Bin 
iiigham, Ala. These plants have a combined capacity of ,i 
pro.ximately 26.000 gal. of crude benzol per day. 

Otto Coking, New York City, contracted to build ben? 
plant in connection with the byproduct coke ovens of t 
Citizens Gas Co., of Indianapolis. 

Lehigh Coke, South Bethlehem, Penn., built plant w:' 
capacity to take care of gas from 3,000 tons of coal per d.i> 
fuel consumed in two batteries of 212 byproduct coke ovens of 
the Koppers type. 

Benzol Product."!, Marcus Hook. Penn.. plant for the p! ■ 
duction of benzol built jointly for General Chemical C 
.\merican Coal Products Co. and Semet-Solvey Co. 

Republic Iron and Steel. Toungstown. Ohio, built and i 
in operation at its byproduct works at Toungstown. pla 
for manufacture of benzol and its homologues. with a c 
pacity of 5,500 gal. of chemically pure products per day. 

Dominion Steel Corp., Sydney, N. S., Canada, completed a 
put in operation benzol plant for manufacture of benzol av 
toluol, which are also produced at byproduct coke- plant 
Sault Ste. Marie. 

Crows >est Pass CoaL Fernie, B. C, started construction 
plant for manufacture of benzol and toluol for the Brit - 
army. 

Tennessee Coal, Iron and Railroad. Birmingham, Ala., cr 
structed benzol plant at Fairfield with capacity to reco\ 
from byproduct gases 15,000 gal. of benzol every 24 hr. . 

Woodward Iron. Woodward, Ala., plant erected by Edison 
Laboratories Co., of Orange, N. J., to utilize gas from by- 
product plant at Woodward. Capacity 2,000 gal. of benzol 
per day. 

Lackawanna Iron nnd Steel, Buffalo. N. Y., built and 
started operation of benzol plant at its Lebanon works; ca- 
pacity 1.600 gal. per day. 

Zcnitb Furnace, Duluth, Minn., built and started operating 
benzol plant, with capacity of 600 gal. per day. 

Illinois Steel, Gary, Ind., reported started construction of 
benzol laboratory at Joliet, 111., to cost $800,000 and to be 
ready by Feb. 1. 

Newport Hydro Carbon, Carrollville, Wis., is erecting plant j 
to manufacture coal-tar products: estimated cost, $100,000. i 
The Newport Mining Co., Ironwood and Bessemer, Mich., is 
interested in this project. 

Iinapoirtairat BooMs of fl9I15 

Aiiioiig the more important books on niinin"; and { 
metallursy pnblislicfl during 1015 were tlie followini:: 

Pauer, O.. and Deiss. E. "The Sampling and Chemic;il 
.\nalysis of Iron and Steel." Translated from the German by 
William T. Hall and Robert S. Williams. (373 pp., $3.) 

Chniicll, J. E. "The Cyanide Handbook." Second cditi 
(601 pp.. $5.) 

Ingalls. W. R.. Douglas. James, Finlay. J. R.. Channini; 
I'ark>-. and Hammond. John Hays. "Rules and Regulati. 
for Mital Mines." Bull 75, United States Bureau of Mii 
c2!16 pp.) 

Johnstone, Sydney J. "The Rare Earth Industry." (136 i 

Lewis, J. Volncv. "Determinative Sfineralogy." Sei • ■ 
edition. (155 pp.. $1.50.) 

Lunge. George (Editor). "Technical Methods of Chenn 
.\nalysis." Vol. 111. (1.125 pp.. $18.) 

MacFarren. H. W. "Practical Stamp Milling and .\mal- 
mation." Third edition. (231 pp.. $2.) 

Park. James. "A Text Book of Practical .\ssaying." i : 
pp.) 

Pirsson. Louis V.. and Schuchert, Charles. "A Test Bool; 
Geolog.v." (1.051 pp.) 

RIes. Hiinrich, and Watson, Thomas L. "Enginrei 
Geology." (772 pp., $4.) 

Rosenhain. Walter. ".\n Introduction to the Study 
Physical Metallurgy." (368 pp., $3.50.) 

Skinner. Edmond Norton, and Plate. H. Robinson. "Mii i 
Costs of the World." (406 pp., $6.) 

Thomson. Francis Andrew. "Stamp Slllling and Cyanil 
Inp." (285 pp., $3.) 

White. Charles H. "Methods of Metallurgical Analysis' 
(356 pp.. $2.50.) 

Wlard. Edward S. "The Theorv and Practice of ' 
Dressing." (426 pp., $4.) 



January 8, 1916 



THE EN(;INHKHIN'(; & MIXING JOURNAL 



For many years Ainencan consumers have been in the 
habit of buying Cookson's and Halletfs antimony to the 
exclusion of practically all other brands, though naturally 
other brands found their way to this market from time to 
time. With the outbreak of the war, Great Britain re- 
quired all the antimony its smelters could make, and 
though shipments are still reaching this countrj' from 
England, the}' are made under special pemiit, difficult 
to obtain. 

The Chinese, who are undoubtedly the largest producers 
of antimony in the world, saw their opportunity, opened 
an office in Xew York and started a ngorous campaign 
to make their prodxict known. They have been exceed- 
ingly successful. Their metal is of a very good quality, 
and ever}- month has seen it arriving in ISTew York in 
large quantities. This antimony is introduced here by 
the Wah Chang Mining and Smelting Co., which has at 
Changsha a very modem and efficient plant. 

Prices fluctuated considerably, and until the last stop- 
page of the Panama Canal the market had gradually 
dropped to about 2.5(5 26 per lb. for antimony in liond. 

AVERAGE PRICES OF ANTI.MOXY 
(Id Cents per Pound) 

1913 1914 , • 1915 . 

Cook- Ordi- Cook- Ordi- Cook- Ordi- 

son's V. a. naries son's U. S. naries sons' naries 

January 9 94 9 53 8 97 7 388 7.110 6 125 17 90 15 85 

February 9 47 9 09 8 25 7 250 7.057 6.100 2125 18.21 

March 9.28 8 85 8.18 7.315 7 073 6 053 28 73 22 13 

.\prii 9.13 8 50 7 98 7 363 7 048 6 006 3188 24 88 

May 8.88 8 37 7 79 7.365 7 020 5.845 42 70 .35.30 

.Inne 8.79 8 27 7 64 7 230 7 000 5 825 47.50 37 69 

July 8.54 8 08 7 55 7 210 6.940 5 638 50.44 38 13 

August 8.38 7 91 7 39 17 250 15 800 13.800 48.00 33 00 

September 8 37 7 93 7 37 11830 9 940 44.56 28 03 

October 7 60 7.27 6 49 14.6S0 12 060 43.50 31.43 

November 7 62 7 30 6 45 17 7.50 14.450 47.25 38 88 

December 7.50 7 25 6 13 16 130 13.310 55 00 39 25 

Year 8.73 8 22 7.52 10 732 . 8.763 40 06 30.28 

Note — Hallett's was not quoted in 191.5. for lack of sales. 

By the land-slide large quantities were held up, the spot 
position became acute, and our market advanced by leaps 
and bounds to 40c. for spot. Part of the metal that was 
held up was unloaded at San Francisco and sent overland 
to this port. Other shipments went around Cape Horn. 

After the war between Russia and Japan, antimony 
prices reached their highest point about eight months 
after the conclusion of hostilities, as the warring nations 
and those who had supplied the belligerents were re- 
plenishing their stocks. Some think that at the conclu- 
sion of this war we shall not see a similar advance. It 
is true that Germany, Austria and their allies have had 
no opportunity of importing antimony, but it is known 
that not only these countries, but also neutral countries 
that were prevented from getting antimony by the strict 
contraband laws, have changed their method of cartridge- 
making entirely. In former years the steel or cupro-nickel 
bullets were filled with antimonial lead ; now new in,<tall- 
ations have been made to produce a steel mantle of greater 
thickness in wliich pure lead is placed. 

Next to Cliiua, Japan sends the largest quantities oi 
antimony to this market. Tlie high prices for the metal 
induced several concerns in this country to start anti- 
mony smelting. Most important of these seems to be the 
Western Metals Co., of Los Angeles, which is managed by 
persons wlio were previously connected with Cookson & 
Co., Newcastle-on-T}Tie. Antimony smelting has been 
started on the Atlantic Coast, though not to any extent 
as yet. The difficulty has been the getting of suitable 
ores. As China no longer shi])s antimony ore and 



Australia has put an embargo ujion the shipments, the 
ores found in this country, in Ala.-ka and South America 
had to fill the bill. Transport difficulties in Alaska are 
the main obstacles to getting the supplies from there, 
though the ore is of an exceedingly good quality. Several 
thousand tons are said to have reached this country 
during the open sea.son. 

In South America competition for the ore has been 
exceedingly acute. English and French refiners, and 
even Japanese refiners, competed with the American 
buyers, and the prices paid for South American ore are far 
in excess of that paid for the Alaskan or for the domestic 
ore. Whereas the bulk of the Alaskan ore was sold at a 
price of about $1.40^ 1.50 per unit, the South American 
ore has not failed to realize -$1.85 per unit; but at that 
figure little business was done, and most contracts were 
clo.sed over $2 per unit. In December business for fair- 
sized quantities was concluded at $2. .5.5 per unit c.i.f. 
New York. The domestic product has the advantage, of 
course, of not ha\ing to pay tlie duty of 10%, and if the 
ore supply can be maintained, domestic antimony .should 
be a permanent feature of the antimony business in the 
future. 

The antimony smeltery at Chelsea, Staten Island, was 
idle, but the ilagnolia .Metal Co. inaugurated antimony 
smelting in Brooklyn. Antimony mines in all parts of 
the United States were rejuvenated, and several little 
furnaces were built. Stibnite deposits are being worked 
10 mi. north of Neuralia, Kern Co., Calif., and also 
at Wild Rose Spring, at the foot of Telescope Peak in 
the Panamint Range, 2.5 or 30 mi. northeast of Trona. 
One of these companies has a smeltery at Industrial 
Harbor, a part of San Pedro. It is said that the Cottrell 
process is being used to save the fumes. 

Several smelteries were reported in operation in Mexico 
in spite of the disturbances in that country. However, 
no attempt was made to exploit the great deposit of 
jamesonite that is known to exist. 

Fa'odtiactaoia of FetiroSetuiina 

Estimates of the petroleum production in the United 
States in 1915 indicate a slight increase over the record- 
breaking year of 1914. According to the figures of John 
1). Northrop, of the United States Geological Survey, the 
"marketed production" of petroleum in 1915 was 267,- 
400,000 bbl., and the total yield about 291.400.000; ap- 
proximately 24,000,000 bbl. of oil brought to the sur- 
face during the year was placed in field storage. The 
stocks of crude petroleum held by pipe-line companies at 
the end of 191.5 approximated 195,000.000 bbl.; this 
reserve was about 50,000,(100 bbl. greater than at the end 
of 1914. Mr. Northro|>'s cstimato of the "marketed pro- 
duction" by states is given in a table on page SO. 

Production in the Appalachian region was for tlie most 
part of routine character. TennesseiJ returned to the 
ranks of oil-producing states with a 50-bbl. well at 
Oneida, in Scott County, near the Kentucky boundary ; 
at the end of the year 6 active wells were reported in 
tlie Oneida field. The Lima field recorded its usual 
decline despite some new wells in Seneca County, Ohio. 
Illinois' output also declined, reducing its rank to fourth 
place as an oil-producing state. 

In the Mid-Continent field, the Cushing pool held the 
center of interest during the first part of the year, but 



80 



THE ENGIXEEIU.XG d- MINING JOURNAL 



Vol. 101, No. 2 



experienced a rapid decline. Atteutiou was then centered 
on the Healdton pool in Carter County, Oklahoma, where 
the daily outpt increased from 2o,(i(»0 bbl. to 7'.j,()0U bbl. 
Northern Louisiana made a considerable increase by 
reason of the oil and gas wells brought in near Crichton, 

"MARKETED PRODUCTION' OF PETROLEUM IN 1914 

AND 1S15 „^^ 

State 191-* 1^^5 

Caliform^a 99.775.327 89,000.000 

Oklahomt .... 73631724 80.000,000 

Te4as 20 068,1S4 26,000.000 

Illinois 21.919,749 18,500.000 

Louis Ina 14,309.435 18.500.000 

West Virginia . i i 9.6S0.033 l°-ZTn 

Pennsvlvania 8.170,335 8. 1 00.000 

Oh?o 8.536:352 7,900.noo 

WvomYne 3,560,375 4.200.000 

Kansas 3.103,585 S.OUU.noO 

iTidilnl 1.335,456 1,000,000 

New TorW 938.974 900,000 

Kentucky .:::::: 502.441 450.000 

Colorado 222,773 200,000 

Other states 7-79 2 50.000 

Total 265.762.535 267.400. OOU 

east of tiie Red Kiver. In the Panhandle region of north- 
ern Texas oil and gas were discovered near Strawn. A 
small oil field of unique geological conditions was found 
near Thrall, in Williamson County, in the south-central 
part of the state. Late in the year oil was found near 
Ran Antonio, in Bexar County, and near Brenliam, in 
Wasliington Counfv In the Gulf Coast field Humble 
retained first rank, increasing its daily output from 
.3.5.(1(10 to 7.5.000 l)b!. The deep test well at Spindletop 
drilled by the Gulf Production Co. was finished to a 
dejitli of 4.720 ft. without discovery of oil or gas in paying 
quantity. Louisiana pools in the Gulf field were feature- 
less except for slightly increased activity in the Edgerly 
pool. 

The output of Wyoming increased materially, the Grass 
Creek and Greybull pools being chiefly responsible. Fre- 
mont County added some new wells, but the most import- 
ant development was on the Silvertip anticline in Park 
County, along the Montana boundary; this field was ex- 
tended across the line into Carbon County, Montana. 
Important gas wells were encountered in Bighorn County, 
Wyoming, and at Havre. Mont. No oil was reported 
from Utali. and Colorado's ]>rodu(tion was fnmi the de- 
clining Florence, Boulder and Eangely fields. Test wells 
in Wasiiiiigton, Oregon, Arizona and Maryland resulted 
in commercial failures. 

California production declined in 1015, largely because 
of overproduction of previous years and con,se<|uent dis- 
<-<)uragement of ])rospecting. The fields south of the 
Tehachipi range exhibited more activity than the San 
Joaquin A^'alley fields. In the Midway-Sunset ficiil. the 
last of the big gusher.s — Miocene No. 2 — ceased flowing 
in March, and no wells of corresponding size were com- 
l)let<.'d. A new field was opened north of McKittrick by 
the Belridge Oil Co.'s No. 1 well at a depth of 4,000 ft. 
Near Oil City the decjiening of an old well in the white- 
oil district resulted favorably, and a revival of activity is 
expected in this section. 

y. 

Missing Stocks iirrk 1915 on tlKe 
New YoB°Ite E-Kclhiaiagfes 

The accompanying tables .-bow the IDI-l quotations on 
mining stocks in tiie Now York Stock Exchange and 
the New York Curb. TIic year aaw a most remarkable 
rise from tlie low figures of January, which were main- 
tained by fixed "minimum prices" in some cases, and 
was marked on the big board by a decided increase in 



the number of mining listings. For Curb prices and 
stocks on the New York Stock Exchange, in 1914, refer 
to the Journal of Jan. 9, 1915, page 88, and for bond 
prices on the New York Stock Exchange see the Journal 
of Jan. Hi, 1915, page 157. 

STOCKS ON THE NEW YORK STOCK EXCH.\NGE 

Tutal 

Company First High Date Low Date Last Sale? 

Alaska Gold MincsU . 26J 405 -*^pr. 22 21J Dec. 9 23 1.543,1- 
.Alaska Juneau Oold 

MiningJt 13 135 Nov. 4 9i Dec. 9 10 387 

.\llis-Clialmers MfK S 49i Oct. 4 7^ Jan. 12 311 2.6.34 i 

-'Vllis-Chalmers.MfB.pf. 3S 83| Dec. 30 33 Feb 10 82 n&K- 

.\malgamated Copper., olj 795 Apr. 24 50| Feb. 24 72 3.033 7 
.\iner. Smelt, and Ref. 

Co 56 1081 Dec. 31 56 Jan. 2 108} 2,312- 

Amer. Smelt, and Ref. 

Co.pf 100 113 Nov. 18 100 Jan. 4 112J 45.' 

.■Vmerican Smelters pf. 

\ 86 92 Dec. 31 86 Sept. 30 911 23.121 

American Smelters pf. B 78 83i Dec. 6 78 Jan. 19 Soj 14,168 
.\mer. Zinc, Lead and 

Smelt. t . 695 715 Dec. 24 67} Dec. 29 69 25,850 

.\naconda Copper Min- 
ing Co.t 50} 91} Nov. 17 495 Feb. 24 91} 3,747,121 

Butte&Superiortt. . 685 79} June 4 53 May 10 72} 544.134 

BatopilasMiningtt... I 4} Dec. 9 5 Feb. 5 3} 243.457 

Bethlehem Steel Co.... 465 600 Oct. 22 46} Jan. 2 439} 1.522,382 

Bethlehem Steel Co. pf. 91 184 Oct. 22 91 Jan. 2 145 94,028 

Chile Coppert 26 26| Nov. 24 23} Dec. 13 24} 90,352 

Chino Copperttt 33} 57} Nov. 17 32} Jan. 6 55} 1,372,153 

Colorado Fuel and Iron. 22 665 Sept. 29 21 J Jan. 5 52) 2.148,480 

Comstock Tunnel 9c. 21c. June 3 7c. May 29 lie. 356,850 

Crucible Steel Co 21} 109} Sept. 29 18} May 10 73 4,622,043 

Crucible Steel Co. pf. 86 1125 Sept. 29 84 May 10 111 114,284 

Dome Mines 175 30} Dec. 6 16 June 25 28} 377.584 

Federal Min. and Smelt. 10 60 June 12 8 Mar. 24 32} 45,046 
Federal Min. and Smelt. 

pf 29} 65 June 12 20 Mar. 13 53} 186,815 

General Chemical Co 165} 360 Oct. 8 165 Jan. 26 3285 15,708 
General Chemical Co. 

pf 108} 116 Dec. 10 106 Mar. 1116 7,172 

GranbyConsol 79} 91 June 14 79} Apr. 19 80 1,170 

Great Northern pf.. 112} 128} Nov. 5 112} Jan. 2 127} 570,095 
Great North, ctfs. for 

ore prop 25} 54 Oct. 22 25} Jan. 2 31} 2,666.163 

Greene CananeaJt 42} 52} Dec. 27 37 Oct. 22 50} 69,700 

Guggenheim Explora- 
tion!: 45} 83} Dec. 31 4.3} Jan. 7 83} 1,1.59.843 

Guggenheim Ex. ex. div. 23} 23} Dec. 31 22 Dec. 31 23 13.800 

Homestake Mining 116 124 Dec. 9 116 Feb. 24 124 5.718 

International Nickel v. 

tr. cfs 215 223} Oct. 5 179} Dec. 3 198 91.661 

Intemat. Nickel pf., v. 

tr rfs 107 110 Oct. 5 10.5} Oct. 19 108 1.025 

Lackawanna Steel Co 28 94} Sept. 29 28 Jan. 7 81 934.182 

Miami Copperttt 17} 36} Dec. 31 17} Jan. 6 36 1,0)6,347 

National Lead Co 44 70} Mav 1 44 Jan. 4 66} 573,618 

National Lead Co. pf. . . 104} 115 Nov. 15 104} Jan. 4 110 13,621 
Nevada Con. Copper 

Co.ttt 11} 17 Nov. 17 11} Feb. 24 16} 391,393 

Ontario .Silver Min 2 12} Dec. 9 2 Feb 23 9; 262,932 

Pittsburgh Steel pf... 74 102} Dec. 1 74 May 12 102S 8,590 

Quicksilver 1} 5} Nov. 1 } Mar. 15 4} 96,820 

Quicksilver pf 1} 6} Nov. 1 i Mar. 29 4} 45,705 

Ray Consolidated Cop- 

pertt 15} 27} Nov. 17 15} Jan. 2 25} 1,541,206 

Republic Iron and Steel 

Co 19} 57} Dec. 9 19 Feb. 1 55} 1,802,265 

Republic Iron and Steel 

Co.pf 75 112J Dec. 14 72 Jan. 30 110 117,194 

Sloss-Sheffield Steel and 

Iron 24 66} Dec. 7 24 Jan. 6 63} 288,974 

Sloss-Sheffield Steel and 

I. pf 85 102 Dec. 30 85 May 6 102 6.930 

Tennessee Coppert 32} 70 Sept. :«) 25) Feb 24 63} 1.378,229 
U. 8. Reduction and 

Ref 1] 101 June 14 1} Apr. 26 3} 51,845 

U. S. Re<iuction ,and 

Ref. pf 1 10} June 14 1 .\pr. 9 4 30.385 

r.S. Steel Corporal ion. 49 895 Dec. 27 38 Feb. 1 88} 23,222.017 
V. S. Steel Corporation 

pf 105 117 Oct. 30 102 Feb. 1 117 344.324 

ttah Copp<TtJ 495 81} Dec. 28 485 .Ian. 5 815 2,762.981 

Vulcan Detinning 5 19 Oct. 22 5 Jan. 21 12 13..390 

Vulcan Detinning pf 21 43 Oct. 29 21 Jan. 22 43 1.185 

Highest and lowest prices of the year are based usually on sales of 100 shares. 

Where priees are use<l for less than that amount thev are marked with an astc-risk 
(*» t Par $.30 t I'ar »25. tt Par $20. tt Par $10. ttt Par. $5 

BONDS ON THE NEW YORK .STOCK EXCHANGK 

Totd 

Bond High Low Last Sales 

Alaska CJold M lO-vr conv. deb.' 25. 150 112} 117 868.000 

Am Smelt. .Sec. 13-yr. s f. 6s. 1926 1155 103i 114! 3,877,000 

Beth Steel Ist ext. gtd. s. f. 5s, 1926 103 98) 102) 2,(M0,0(X) 

Beth, .steel 30-v Ist and r. m. gUl. .5». '42 102} 85} 101) 12.194..300 

Chile Copper conv. 78, 1923 141 111 135 2,928,000 

Col Fuel and Iron gen. 8. f. K. ,58, 1948 95 87 94 82,000 

Granbv Consol. eonv. 69, St'ries A... Ill 98 104 1,172.000 

Granby slamp.-d 105 102} 104 293,00" 

Illinois St«.l deb. 4)8, 1940 92} 82} 91 2.163.000 

Indiana St^l Ist mtge. Ss. 19.52 102} 99 101 i 1,835.000 

Inspiration Cons. Cop. conv. Os, 1922 190 97 185 1.3.768.500 

Lacka. Stwl Ist ev. g Ss. 1923 08{ 89 98} 1.795,000 

Lacka. Ist con. mtg. ,3», .Scr. A. 19,50 97 65 92! I3,.346,.500 

Ray Con. Cop. 1st mtg. cv. 6r, 1921 140 103 129 2.S66,.300 

R. I. & S. I0-.30-vr. 8. f. nitg. .58. '40 07} 90) 97 2.295.000 

Tcnn. Cop. sub. reels, for Ist 10-yr. cv. 68. f.p. . 136 117 124i 276,0(K) 

U. S. Iletr & Ref. Ist 8k. fd. Os, 1931 .30) 20 23 113.000 

U.S. Steel Corp. 10-60 yr. K. B. f. 58. '03. 105 991 104} 19.370,000 

U, 8. Stw-1 Corp n'gistered 105 99J 1045 297,000 

Va. Iron, Coal & C. Ist g. 5«, 1949 901 82 89 226,0(10 



January 8, 1916 



THE KNCINKKRING Cr MIN'IX(; JOURNAL 



81 



MININc; 
Company 



STOCKS ON THE 
Open 



NEW YORK CURD 
High Low 



—1015 
I.ast 



MINING STOCKS ON THE NEW YORK CURB— (Continued) 



Albion .Mil 
An 



. Cons. . 
Arij. Duqupsnf 
Firavor CoDsoKi 
niueBcl!,.. 

Blue Bull 

BiKrottomvo,,. 
MiK Ledge Dev, 
Braden CV.pii.r 
Binirhani MinTi, 

Booth 

Butte Cnpniiil 
Buffalo Mines.. 
Butte-New Vorl 
Butte& Superin 



Cae 



sMii 



Calaveras Cop 
Caledonia Copper. . . , 
Can. Copper. . . 

Caribou Cobalt 

.'ihboy. 
Chile Copper, w. i 
CTrodePasecifop, . 
C O. D 

Combination Fraeli.ir 
Comstoek Tunnel. . , . 
Cons. Ariz Smelt..... 
Cons. Cf)pper Mines. 
Consolidated Nev.-Ht 

1 Reserve 

Daly-West 

Davis-Dalv Copper , 
Dia, Blaek Butte... 

Dome Ex 

Dome Lake 

East Caledonia 

ElvCon 

El Paso Con 

lima Copper 

•deral Reserve M in 
First Nat'l Copper , . . 

Florence 

Foley O'Brien 

GoidHili':'',' 
ColdheldCons. 
Goldfield Merger. 
ne-Can., new. . 
, Cop. M. * R 



ana.ui 



to f ■< 



Halifax Tom 
Heela Mining. 
Howe Sound, «. i 
Inter. Mines Dev. Co 

Iron Blossom 

Jim Butler 

.Jumbo Extension 

Kerr Lake 

I<onana8 

Kennecott Copper . . . 
I\ey3tone Mining . . . . 

J^ake Superior 

La RoseConsol 

Lone Star 

Magma Copper 

Maieatie Mines 

Marsh Mining 

Mason \-allev . . . 

Mclntyre...' 

MeKinlev-Darragh. . 
Mines Co. of Am..... 

Montana Con 

Mother I.od.- 

Nat. Zineandl.e.id 
Nevada Hills. 
N.-w l-tah Kinghani 
Nipissine Mines. . . 
No. Butte Devc-lop . . 

Ohio Copper 

On, 

I'aeifie Smelters. 
Peterson I.;ike . . 
Rav Hereul.-f. 
Ilex Con. Mil. 

Hoehestor Mines 

Sandstorm Kendall . 

San Toy 

Santa Fe 

Sells... 

Seven Troughs Coalil 

Silver I'iek 

South I'tah Mines.. 
Stand.. Silver-Lead . 
Stewart. 
Success .Mining. 
Superstltinii ^L(' 
Temiskaimng 
Tonnp;ih Heliuoiil 
Tinfir .Mining , . 
Tonopah M.Tg.r 
Tonopah Ext.en.sioii 
Tonopah of Nev 
Tularosa. 
Tuolumne. . 

Trinity ("oppiT 

Tri-Bullion 
United Copper . . 
U.S. Continental Min 

United Verde Ex 

Utah Con 

Wasatch 

West End Cons 

West End Ex 



HJ 

i 



i; 

17i 



i 



2,7X7, Kid 
7.51, lot) 
■IV.ifiTr, 
■M,rM) 

<.m.r,7r< 

IIXI 

:).l.'>,7.^() 

2(JII 
8.H,!MJ() 

inii,.siiii 
i2t,i«)(i 
1 111,1121; 

l.l>.''.2,127 

2un 

41)1, .wo 

108,800 

1 1 ,400 

159,93.5 

5,510 

9,.-).50 
.312.B45 
.■i7:t,700 
42,9.^.5 

7:i9,ion 



4ii:i,! 



,41.1 



174.2( 



99.20(1 

1,1(11,090 

18.775 

399.550 

14,01(1 

1,000 

2,S00 

242,780 

190,035 

2,000 

1,000 

149,400 

100 

1,092,900 

1.30,000 

2,834,810 

1.50,959 

2,700 

04,. 520 

.30,100 

273,4(50 

1,501,700 

(12,057 

200 

400 

7,750 

29,310 

l.><5,940 

1,. -.113.(1(1(1 

ltl7,,SL'0 

5(l.n.-|(l 

2,11(18.201 

1.7.070 

1.11(1,730 

2.132,0(W 

2(K) 

3,920 

93,115 

210,205 

1.50,9(50 

296,908 

73,555 

0,2.50 

1(11,900 

511,77.3 

1(1,410 

:1S,5(I0 

3,771, .5.50 

133,470 

(10,390 

1.59,193 

298,4.30 

(1(1.(100 



221. .500 
510,400 
987.1,85 



37,700 

204,010 

13,720 

375.995 

871.1(15 

2,113,2(15 

1.008,905 

02,400 

21,570 

4,.5(M) 

4,51,005 

330.032 

50,5.59 

109,200 

251,970 

.5.50 

301,019 

200 

20,(500 

300 

175 

135,011 

4(50,025 

019,780 



Company 
Wetllauf.-r.Silv. Mines. 
Wh. Knob. Cop. pfd.... 
Yukon Gold Alinc 



Con^pany 
AlaskaG. M.Bsw. i, 
Braden Cop[XT Os. . . 
Braden Copper 7». . . 
Ccl■rod,■l•a.s.C•op.(,^ 
Cons. Ariz.. 5.«... 
Chile ( Copper 7s . . 
Ely Cent. Os... 
Kennecott ('op. Os . 
United Lead deb. .5s. 



Open limli Low La»t Total Salen 

*3 12 .3 10 41.200 

U 3 J 1 2 49,3.50 

2J 31 2i 2: 49,295 



1914 11,0(H,I72 1913 10,,57li,792 

1911 11,772,314 1910 :J4.172,.548 



Bonds 
Open Hiuh 



Last 
1I8S 
3:J5 
.322 J 
121 
33 
IICJ 
t 
220 



*Cent3 per share. 



Sales 

32,200 

,808.000 

203,0(X) 

..574,000 

202,9.50 

,337,000 

27.900 

,791,000 

5.000 



Tlif pritc Inr aliiiniiiuin was sleady at aliout \'-h: pei 
!7..5oo II). up to tlie iiiidtUu ij[ May. An impi'oveiiieiit in tin- 
(leniantl tlioii iiianil'ested itseli', and it swelled until alu- 
minum became a very scarce article, the price rising to 
liOc. per lb. in the latter part of 1915. At the high prices 
it became profitable for electric companies that had in- 
stalled aluminum transmission wires to take them down, 
sell the aluminum and replace it with copper. Tliis was 
done to a considerable e.xtent. Although the quotation.* 
lor aluminum rose as high as GOc. per pound in tiie last 
(juartcr of 1915, the bulk of the production went into 
consumption at very 111 luh lower figures, the contract 
]iriccs of the principal producers having ranged from 20c. 
to 31c. per lb. 

In a recent sjieoch at Detroit, A. Y. Davis, president of 
the Aluminum Co. of America, stated that his company 
was then producing 18 lb. of aluminum where 10 lb. was 

AVER.\GE MONTHLY PRICE OF INGOT ALUMINUM 
(At New York, in Cents per Pound) . 



Year 1912 1913 1914 1915 Ycai 

Jan 19.13 20.31 18.81 19.08 Julv. 

Feb 19 44 20.04 18 81 19 22 Aug 

Mar 19, .58 27.05 18 .50 19.00 Sept. 

April 20.38 27 03 18 10 18 .88 Oct. 

May . 21 09 20 41 17 95 22 03 Nov.. 

June 22 S3 24 08 17 75 30 00 Dec. 



1912 1913 1914 1915 

23 .50 23 :» 17 60 32.38 

24 3S 22 7(1 19 88 34 .50 

■-' . I ; -'I o'l 19 94 47 75 

-'I. !• i J" 1 . IS .50 50.00 

Ji. ..I. 1" .;.', is 00 .57.75 

2.J 7.5 ^s.s,^ 1!, <)0 57. 13 



Year 22.01 23.64 IS (>3 3:J.9S 

lus would indicate an American pro- 



made in V.m. Ti 
duciion of about 80,000,000 lb. in 191.5. The British 
commandeered the production of the company's ])laiit situ- 
ated in Canada, wherefore that supply — 8,000 to li),iiO0 
Ions per annum — is going to Kngland instead of coming 
to the United States, as lieretofore. 

The Aluminum Co. of America is planning greatly to 
increase its capacity. A big wafer power, estiiiialed at 
M)0,000 hp., is being developed on the St. Lawrence Hiver. 
During 1915 the Aluminuin Co. of .\merica bought out 
the Southern Aluminium Co., which bt>came involved in 
linancial difficulties in 191 I. and immediately took steps 
to com|)lete the plant at Whitney. X. C., whereof con- 
struction had been interrupted. The following summary 
111' the aluminuin industry in 1915 is based on authorita- 
tive inl'ormation : 

The aluminuin niaiket in 1915 followed closely the 
market for other metals. During the first quarter of the 
year the supjjly of aluminum was ample and the price 
remained about 20c. jier lb. During the succeeding quar- 
ter file sui'])lus began gradually to diminish, and for the 
last si.\ months of the year the demand was in excess of 
the supply. This situation was brought about in part 
l)y the gradual reviving of business in this country and 
the consequent increase in consumption of aluuiiuum. 



83 



THE ENGINEEEING &f MINING JOURNAL 



Vol. 101, No. 2 



partly by the gradual cessation of importations and partly 
by the increasing urgency and demand in Europe for 
aluminum for war-munition purposes. The price grad- 
ually rose from 20c. to 31c., although during the last 
quarter resales have been made at prices substantially in 
excess of tho.se asked by the domestic manufacturers. 

The domestic manufacturers adopted the policy of 
conserving the entire United States production for United 
States consumers. The result has been that while there 
was considerable pressure to get aluminum, ueverthele.ss 
the domestic consumer was taken care of. While some 
took advantage of the urgency of the foreign market and 
resold their aluminum at high profits, this was not a 
general practice, and in consequence the domestic con- 
sumer obtained and used all that he required. The presi- 
dent of the Aluminum Co. of America stated in Detroit 
a few weeks ago. at an address given before the Society 
of Automobile Engineers of America, that his company 
had not sold any aluminum for munitions or for war 
purposes, but that nevertheless, considerable resold alumi- 
nium had gone out of the country for this ]nirpose de- 
rived from aluminum transmission wires that had been 
replaced by copper. 

In the same address he stated that the company was 
bending every energy to increase its output and that as 
soon as its new works are finished, on wliich it is now 
working and which it e.xpects to complete in 191G, what- 
ever pressure now exists for an additional supply of 
aluminum would be relieved, and furthermore, that his 
company was proceeding on other sul)stantial enlarge- 
ments for 1917 and following year.s, and that, so far as 
he could see, after the present pressure is relieved the 
market would be settled and normal for years to come. 

It will be of interest to note that the extreme demand 
from Europe arose largely from the increase in the use 
of ammonal, an explosive which has been known for a 
great many years but which was not until the last few 
months used in large quantities by the European bel- 
ligerents. Ammonal is a niixtui'e of nitrate of ammonia 
and powdered aluminum. The aluminum burns at the 
time of the explosion and, ijy imjiarting a high heat to the 
ex])losivc gases, causes them to exiiand to a volume con- 
siderably greater than they otherwise would. Annnonal 
has heretofore been considered unreliable on account of 
its tendency to absori) moisture, but either because the 
belligerents found some way to overcome this or because 
the ammonal is u.sed so soon after itn manufacture, this 
objection seems no longer to hold, and aluminum was in 
great demaiu] in p]urope for this purpose. 

The world's supply of bismuth is derived chiefly from 
Bolivia, where the mines of Aramayo, Francke & Co. at 
C'horolque and Tasna, the product of which is smelted at 
Qucchisia and Buen Retiro, are the principal ]>roducers. 
This company in 1914 produced 437 tons of impure i)ars 
and 112 tons of ore. The company recently reported that 
in its fi.scal year ended Afay 31. 1 91.1. it produced 73% 
tons more of crude bismuth than in 1913-11. However, 
the .xales were ('A tons less, owing to tlie lock-up of stocks 
in (Jcrniany, while new refining works were being estab- 
lished in Kngland. On tlie other hand, the average price 
realized was 22r. per lb. belter than in the previous year. 

(ii the United States bisnnith is produced as a by])rod- 
uct by the principal silver-lead .smelting and refining 



companies. The price for bismuth in the United States 
at the beginning of 1915 was $2.75 per lb. In the latter 
part of the year it rose to $4 per pound. 

No new producers of bismuth in the United States 
have offered metal to the trade. Importations from 
abroad have been cut off, and with the demand steady, 
the accumulations of other years has been used and 
there is little spot metal available at the end of 1915. 



i)e@tia&a m 



StejJS were finally taken in 1915 to produce potash 
salts on a commercial scale in the United States. While 
Searles Lake will undoubtedly be the most important 
source of potash for some years to come, the war con- 
ditions permitted other sources to be developed. The 
alunite deposits near Marysvale, Utah, thus became the 
first important producers of potash in the United States. 

The plant of the Mineral Products Corporation, or- 
ganized by Howard F. Chappell, began the production of 
potash on a commercial basis at ]\Iarysvale in October, 
1915. This plant, in which the Armour Fertilizer 
Works and the U. S. Smelting, Refining and Mining 
Co. are interested, produces both potassium sulphate and 
alumina in liigh-grade form. The potash shipments have 
averaged about 95% K2SO4, and the rated capacity of 
the works is from 25 to 30 tons per day ; the grade of the 
])roduet and the capacity of the plant are largely de- 
pendent on manipulative skill and are gradually being 
brought up to rated efficiency as the operators arc be- 
coming more experienced. Shipments of alumina have 
also been made ; varioiis uses are being developed for this 
product, a large market as a refractory being expected. 
The present plant handles about 150 tons of alunite daily 
and plans are being made to double its capacity. 

At Searles Lake, California, the American Trona Cor- 
])oration proceeded with the construction of its works 
to treat the potassium-bearing brine of that desert basin 
by the Grimwood process. For reasons of economy of 
operation and better .^^hipping facilities, it was decided to 
jiroduce at Trona (Searles Lake) only mixed salts from 
the first jiart of the process and to refine these mi.xed 
salts at the port of San Pedro, Calif. The initial plants 
are ex])ccted to produce 100 tons of potash and 30 tons 
of borax daily. The crude-salt plant at Trona is to be 
ready in March, 1916, and the refiner}' at Saii Pedro a 
few weeks later. 

The alunite deposit of the Florence Mining and Milling 
Co.. in the Marysvale district of Utah, is to be exploited 
i)y a newly formed corporation, the Utah Potash Co. 
Investigations were also made of the possibilities of 
utilizing the tailings of certain mines, leucite, green-sand 
marl, inica, feldspar and kelp. Some plants were erected 
to utilize the potash of the feldsi)ars, but did not get 
into operation on a commercial scale. Work was begun 
in 1915 on a plant at Great Salt Lake to extract potash 
from the brines of the evaporating ponds of the Inland 
Crysal Salt Co. In their present development practically 
all of these are war-time processes that could not com- 
)>ete with the German ])roducers on a pre-war basis. How- 
ever, i)otash will ])rol)ai)ly never be so chea]) as it W!i>^ 
before the war. It is one of those commodities on whi' 
it will be most easy for Germany to levy and collect tiU' 
in the future. 



.Inimmy 8, T!J16 



THE EXGIXEEUrXG C-- MIXING JOURNAL 



83 



MiimSinictf Divideinidls iiOi 10^15 



The tables which follow show liie dividend!; ])aid in 
101 I. 1!I15 aud to date hy the principal mining, uietal- 
InrLrical and holding companies of America. The list 
includes practically all United States mining companies 
that liave paid dividends since l!)(tG, except a few that 
have ceased to have a separate cor])orate existence. 

The total of $75,383, ^ST disbursed by 10 companies 
in mining dividends sets a new record for tl e United 
States. While it is a remarkable showing as c mpared 
with the $60,333,529 paid last year hy 90 companiis. it is 
not a great increase over 1913, when 110 companies paid 
$73,440,701. The most significant fact is that in Decem- 
ber of 1915 the dividends were greater than those of 
December, 1913, and December, 1914, combined and 
amount to more than 25% of this year's total. 

As we have always pointed oiit, however, these divi- 
dends do not mean the receipt by the public of these 
amount-?. For instance, a large share of Xevada Con.'s 



l)ayments g"" to Utah Copper, while Champion's are split 
e(|ually between St. Mary's Mineral Land and Copper 
Ifange. On the other hand, there are large producers 
which do not make their dividend public, although this 
policy is becoming less common. 

With the metallurgical and holding companies, the 
1915 payments are $82,592,194, while in 1914 they were 
$90,434,077 and in 1913, .$99,710,693. Howeu-r, in 
1914 the Steel Corporation common paid -$21,602,856 and 
in 1913 .$24,41.5,12.5, against nothing in 1915. 

As most mines are commercial producers of two or 
more metals, no attempt is made to classify them as 
copper producers, lead producers, etc. 

Canadian aud ^lexican mines paid $10,686,384, against 
$15,231,122. The sdver mines of Canada suffered 
severely through the low price of that metal while Mexico 
was under the blight of re\olution and rebellion, although 
recovery began late in the year. 



DIVIDENDS OF MINING COMPANIES IN THE INITED .STATES 







SHARES - 


1914 




DIVIDENDS PAID - 

1915 
















Par 


Per 




Per 




To Date 




I,Jite8t 


COMPANY NAME 


SITUATION 


Issued 


Value 


Share 


Total 


Share 


Total 


Total 


Date 


Amotjnt 


Acacia c 


Colo 




$1 










$122,004 






$0 OOJ 




Colo 




10 










778,000 




•09 


.Vhimrk. c 


Mich. 


.50.000 


25 


6.00 


S300.000 


$15 .50 


J775,000 


3,175,000 


Nov. 


■15 


2.50 


Alaska G..ldficlds 


. Alas. 


■ 250.000 


5 


.12 


30,375 


.12 


30,375 


403,250 


.Ian, 


•I.S 


.12 


ALisika Mexican, e 


Alas. 


180,000 


5 


.80 


144.000 


.50 


90,000 


3,507,381 


Nov. 


'15 


.10 


Alai-ka Tri adwfll, g 


. Alas. 


200.000 


25 


5.50 


1,100,000 


3 25 


650,000 


13.335.000 


-Nov. 


'15 


.30 


Alaska I'nltcd, g 


. Alas. 


180,200 


.5 


.90 


162,180 


1 40 


252.280 


1.991,210 


Nov. 


'1.5 


.30 




. Mich. 


100.000 


23 






1.00 


100.000 


100.000 


.Iiilv 


'1,1 


1.00 




. Kan 














1.108,820 








Anaconda. c 


. Mont. 


2,331.230 




2.50 


11.1'-1,250 




6,993,750 


99,573,125 


Nov. 


■15 


1.00 


Anchor, s 


. Nev. 


500,000 


1 






.06 


30,000 


.30,000 


Julv 


1.1 


.03 


ArEo;iaut. p 


. Calif. 


200,000 


5 


1.80 


?60,000 


.00 


120,000 


1. 700.000 


Dec. 


•15 


.10 


Arizona Copper, pt 


. Ariz. 


1.426.120 


1 20 


a 


119,221 


a 


119,221 


2,129,062 


Nov, 


'lo 




Arizona Copoor, com 


. Ariz. 


1,519..S9U 


1 20 


,54 


8"1,003 


.42 


646,336 


18.461 .338 


July 


'15 


.24 


Bacrtad-Chasf. g.. pf.... 


. Calif. 


1S4,S19 


5 










202.394 


Jan. 


■09 


10 


BaW BuIU-, ?.s 


. Mont. 


250,000 


1 










1.344,648 


Oct. 


0/ 


.04 


Baltic, c 


. Mich. 


100.000 


25 










7.950.000 


Dec, 


13 


2.00 


Beck Tnnncl, g.s.l 


. rtah 


1,000.000 


.10 










940.000 


Oct, 


■09 


.02 


Benton. 7.1 


Wis. 


19(>.li07 


1 










10,949 


Oct, 


OS 


oii 


Binpham-New Haven, c. 


. rtah 


22S.G90 


5 


.20 


45.738 


1,00 


228,690 


614,485 


Dec, 


lo 


.20 


Board of Trade, z 


Wis. 


120.000 


1 










78,000 


Jan. 


11 


.05 


Bonanza Dcv . g 


Colo. 


sm.mM 


1 










1,425.000 


Oct. 


11 


,20 


Boss.e *: 


Nev. 


4OS..W0 


1 


.10 


40,850 






40.850 


Dec. 


14 


,10 




. . Utah 


l.')0,200 


1 










27,261 


Nev. 


■11 


,035 


Brunswick, c 


. Calif. 


3'.15.2S4 


1 


.18 


71,152 


,18 


71,152 


179,598 


Sept, 
Julv 


'15 


,06 


Bull. Bick & Champ., g. 


. Itah 


lOO.CXH) 


10 










2,728,400 


08 


.10 


Bufc-\l,v Scott, c... 


. Mont. 


79.311 


10 






.15 


23,793 


209,457 


Oct, 


lo 


.15 


Bu..kfr Hill Con. E 


. Calif. 


2IX).IH)0 


1 


.30 


60,000 


,30 


60,000 


870,000 


Dec, 


lo 


.02! 


Bunker Hill i Sull, Is. . 


Ida. 


327,000 


10 


3,00 


981,000 


3 25 


1.062,750 


16,773,000 


Dec, 


'lo 


.50 


Hui;.^ H-,llakLiva. c. 


. Mont. 


2.50,000 


10 










125,000 


.-Vug. 


'10 


.50 


BiHlc A- Superior, z 


. Mont. 


271.136 


5 


2.25 


610,054 


IS.OO 


3,898,001 


4,309,909 


Dec 


lo 


S.25 


CM.-,l„„ia. I.s 


Ida. 


2.605.000 


1 


.05 


130,250 


20 


421,000 


703,300 


Dec 


1.1 


.02 


CaluTiiot & Arizona, c. 


Ariz. 


617.412 


10 


3 00 


I. S3 1.008 


3 25 


2,006,557 


23,148,224 


Dec. 


1.3 


1.25 


Calumet A- Heel;,, e .. 


.Mich. 


lOO.IKK) 


25 


10.00 


1,000,000 


.WOO 


5.000.000 


129,230.000 




■lo 


15.00 


Camp Bir.l. tr.r^. . . 


Colo. 


1,1(K).U51 


4 .S6 






.24 


207,312 


9.750.S36 


Nov 


lo 


.24 


Camp Bird. pfd-. s 


. Colo. 


6.50.000 


4.86 


.34 


221.130 


.34 


221,130 


945,150 


Julv 


lo 


.17 


Cardiff. 1.5. 


. Utah 


.500.000 


1 






,25 


125,000 




Oct. 


15 


.25 


Centenni;d-Kur.. l.s.g.c. . 


. Utah 


100.000 




1.50 


150,000 






4,050,000 


Apr, 


'14 


1.30 


Center CiTck, I.I 


. M.i. 


100.000 


10 


.20 


20,000 


35 


35,000 






■16 






. Mich. 


100.000 








31 00 


3.100.000 


11.500.000 


Dec 


15 


2.00 


Chief Con., 8.g.l 


. . Utah 


S.S0.545 


1 


,10 


87,676 


10 


88.053 






lo 




Chino. c 


Ariz. 


869.9S0 


5 


2.50 


2,169,065 


3.00 


2,009,860 


6,697,995 


Dec, 


15 


1.00 


Cliff. E 


. . Alas. 


100.000 


1 










210,000 


Dec. 


■13 


,05 


Cliff, s.l 


. Utah 


.300.000 


1 










90,000 


Jan. 


'13 


,10 


Colo C.cld Dredging. . 


Colo. 


IIHI.OOO 


10 


3,50 


350,000 






675,000 


Sept, 


14 


1.00 


Clotado, l.s.g 


Utah 


1.000.000 












2,570,000 


Dec, 


'12 


,a3 




Utah 


2S5.540 


5 










226.S:i2 


Oct, 


0/ 


,20 


Cmnmercbl Cold 


Ore. 


1,7.50.(KK) 


1 














'09 


,00} 




Nev. 


SOO.OOO 


1 
















OoJ 




z. Ida. 


46O.IH)0 


1 






5.50 


2,530,000 


2,530.000 


Dec. 


14 


1.50 




Utah 


l.OOd.OIX) 


1 












Julv 


'13 


03 




. Mo. 


22.000 




1,00 


22,000 


11.00 


242,000 


.551.000 


Dec, 


15 


10 00 




.. Mich. 


393,71 ) 


100 










13,986.746 


Oct. 


■13 


50 


D.llv-.IudKe. s 1 


. . Utah 


30I).(«I0 


I 


.00 


180,000 


1,00 


300.000 


1.1,55.000 


Dec 


'lo 


35 


Dalv \V,~il. s.l 


. . Utah 


ISO.IKIO 


20 


















!'• l.;.mar.g.s 


. . Ida. 


.SO.OIIO 












S75,tXI0 


Aug. 


11 


,25 


I)r .lack Pot Com., g. . . 


. . Colo. 


S.OIXI.OOO 


.10 










45,0(H> 


Mar 


1 1 


OOi 


D,*Uun, 1 


. Mo. 


65,7S2 


100 










3,530,900 


Dee, 


■13 


.76 




Tenn 


199 .800 
20I).(HX) 


4 .S6 


.39 




,24 


48,600 


iO,lH)0 


Oct, 


•13 




Dunkin. g 


Colo. 


m 


Duluth A- ftah Dcv.. I.s 


.. Ut;lh 


.50.0(K) 


.20 


.12 


6,000 


OS 


4,000 


10,000 


Mar, 


'lo 


04 


ICagle * Blue Bell, g.s.l. 


. . Utah 


.S93.l4rt 


1 


.15 


133.072 


13 


133.972 


446,573 


Dee. 


'lo 


.05 


Elkton Con., e 


. . Colo. 


2..50<1.000 


1 


,08 


200.000 


IM 


100.000 


3,.579.460 


Mav 


■15 


,02 


El Paso. E 


. . Colo. 


490.0! 10 


.5 


,10 


49,000 






1.707..545 


Fch, 


14 


,10 




N M 


300.000 
60.(X)0 


UK) 






.10 


30.tX10 


I.VI.IXIO 
2.708.7.50 


July 
Jan, 


■09 


.10 


Federal M. 4 Sm.. com. 


.. Ida. 


1 .50 


Fe,ltralM.A-Sm.,pf.... 


. Ida. 


120.000 


too 


5,00 


599,305 


4.00 


479,444 


9,4lil5.:«)2 


Dec, 


1,5 


1.00 


Plnrence. c 


. Nev. 


1,0.50.000 


1 










840,000 


,\pr. 


■11 


.10 


Frances Mohawk. E.... 


Nev. 


912,000 


1 










546,000 


Jan. 


'OS 


.05 




Colo. 


Kl.Oim 


100 










180,000 


Dec, 


■09 


1 00 


Irenu.nt Con., g 


Cllif. 


200.(Mlfl 


2 ,50 


,18 


36,000 






2.54,000 


Oct, 


'14 


02 


Frontier, z 


Wis 


1 .2,50 


100 










146,202 




'12 


2 00 


Gemini-Keystone, g.s. . . 


Utah 


5.000 


100 


15 00 


75.000 






2,305.000 


Di-c, 


14 


5 00 



84 



THE ENGINEERING c- :\IINING JOURNAL 



Vol. 101, No. 2 



COMPANY NAME SITrATlOX 

Golconda, g. Ariz. 

Gold Coin of Victor, g Colo. 

Gold Dollar Con., g Colo. 

Gold King Con., g Colo. 

Gold Sovereign, g Colo. 

Golden Cvele, g Colo. 

Gold Chain, g Utah 

Gethin-LeRoy. l.s Utah 

Golden Star, g Ariz. 

Goldfield Alamo, s.l Nev. 

Goldfield Comb. Frac. g Nev. 

Goldfield Con., g Nev. 

Grand Central, g Utah 

Granite, g Colo. 

Hazel, g CaUf. 

.Hecla, l.s Ida. 

Hercules, l.s Ida. 

Homestakc, g S. D. 

Horn Silver, s.c.2.1 Utah 

Insurgent, g Wash. 

Iowa-Tiger, g.s.l Colo. 

Iowa, g.s.l Colo. 

Iron Blossom, s.l.g Utah 

Iron Silver, s.l.g Colo. 

Isle Royale. c Mich. 

Iron Cap, pfd. c Ariz. 

Jamison, g Calif. 

Jerr>' Johnson, g Colo. 

Jumbo Ext., g.s Nev. 

Kendall, g , Mont. 

Kennedy, g Calif. 

Jim Butler-Tonopah, g.s. . . Nev. 

King of Arizona, g Ariz. 

Klar-Piquette, z.l Wis. 

Kennecott, c Alas. 

Knob Hill, g Wash. 

Lake View, z Utah 

Liberty Bell, g Colo. 

Linden, z Wis. 

Little Bell, l.s Utah 

Little Florence, g Nev. 

Lost Packer, c Ida. 

Lower Mammoth, g.s.c. . . . Utah 

Magma, c . . Ariz. 

Mammoth, r.s.c Utah 

Manhattan-Big Four, g Nev. 

Man,- McKinney, g Colo. 

Mary Mtirphy, g Colo. 

Mav Dav, g.s.l Utah 

Meiican. s Nov. 

Miami, c Ariz. 

Mohawk, c Mich. 

Monarch-Madonna, g.s.l . . . Colo. 

Montana-Tonopah, s.g. . , Nev. 

Mogollon Mines, g.s N. M. 

Moscow iL &. M., g.s.c.::. . Utah 

Modoc, g.s Colo. 

Mountain, g.s Calif. 

Napa Con., q Calif. 

National, g Nev. 

National Lead and Zinc, l.z. Mo. 

Nevada Con., c ■ ■ . Nev. 

Nevada Douglas, c Nev. 

Nevada Hills, g Nev. 

Nevada Wonder, g.s Nev. 

New Centurj*. z.l: Mo. 

New Idria, q Calif. 

North Butte, c Mont. 

North Star, g Calif. 

Old Dominion M. & Sm., c. Ariz. 

Ophir, s.g Nev. 

Opohongo, g.s.l Utah 

Optimo, z Ww. 

Oroville Dredging, g Calif. 

Osceola, c Mich. 

Osceola, l.z Mo. 

Parrot, c Mont. 

Pearl Con., g Wash. 

Pharmacist, g Colo. 

Pioneer, g Alas. 

Pittsburgh-Idaho, I Ida. 

PittaburKh-Silver Peak. g. . Nev. 

Plymouth, g Calif. 

Portland, g Colo. 

Prince Con. 1.8 Utah 

Quartette, g.s Nev. 

Quilp, g Wash. 

Quincy, c Mich. 

Uay Con., c Arix. 

Republic, g Wash. 

Rochester, l.z Mo. 

Round Mt.. g. Nev. 

8t. Jos^h. I Mo. 

Seven Tr. Coalition, g Nev. 

Shannon, c Ariz. 

Shattuck-Arizona, c .\riz. 

Silver King Coalition, I.h. . . Utah 

Silver King Con., l.s l^tah 

Bioux Con., I.B.g Utah 

Skidoo.g Calif. 

Snowstorm, eg Ida. 

Standard Con., g.a Colif . 

Stretton's Ind., g Colo. 

Socorro, g N. M 

SuceesM, z Ida. 

Superior & Pills, c ... Ariz. 

Stewart, s.l Ida. 

Tamarack, c Mich. 

T^-nnesnec, c Tenn. 

Tomboy, g.8 . . Colo. 

Tonopah- Belmont, s.g Nov. 

Tonopah Ezt., g.s Nev. 

Tightner, g Calif. 

Tonopah of Nov., s.g Nev. 



DIVIDENDS OF 


MIXING 


:;oMPANiE 


3 IN THE UNI 


TED ST.\T 


ES — Continued 
3ENDS PAID 






























1914 




1915 














Par 


Per 




Per 




To Date 




Latest 




Value 


Share 


Total 


Share 


Total 


Total 


Date 


Amount 


850,000 
1,000.000 


$1 






$0.20 


$170,000 


S 170,000 


Dec. 


•15 


$0,10 


1 
1 










1,350,000 
100,000 


I'eb. 
Dec. 


'09 
'12 


.02, 


1,000,000 
1 804,772 


1 
1 






.01 


10,000 


1,417,319 
32,560 


Nov. 
Nov. 


•15 
'12 


.01 

ooJ 


1,500.000 


1 


$0.67 


$1,005,000 


38 


570,000 


4,170,000 


Dec. 


'16 


.02 














130,000 


-Mav 


'13 


.03 


750 000 


1 










7,500 


Nov. 


'13 


.01 


400,000 












140,000 


Mar. 


'10 


,05 




1 












Alav 


•10 


,03 




1 










92,111 


Nov. 


'09 


.10 


3,558,367 


10 


.30 


1,067,744 


.45 


1,601,617 


28,999,832 


Oct. 


'16 


,10 
.021 


500,000 


1 


.15 


75,000 


.02 J 


12,500 


1,633,250 


Dec. 


'lo 




1 










286.500 






.01 


900,000 


1 










971.000 


Dec. 


'13 


.01 


1,000.000 


.25 


.22 


220,000 


56i 


.565.000 


3,755,000 


Dec. 


'16 


10 


1.000.000 


1 


3.00 


3,000.000 


2.25 


2.250,000 


10,7.50.000 


Dec. 


'lo 


,20 


250.000 


100 


8.80 


2,210,208 


8.80 


2,210,208 


38.891.908 


Dec. 


'15 


1.65 


400,000 


25 










5,642,000 


Sept. 


'0/ 


,05 


100.000 


1 










25,000 


Dec. 


'11 


.12J 


3.000 


1 


2.00 


6,000 






9,250 


Dec. 


'14 


1.00 


1.66R.667 


1 


.005 


8,333 


.01 


16,667 


270,167 


Dec. 


'15 


OOi 


1.000.000 


.10 


40 


400,000 


,38 


380.000 


2,.555.000 


Dec. 


'Id 


,08 


500,000 


20 


.20 


100.000 


.20 


100,000 


5,050,000 


Dec. 


'16 


.20 


150.000 












150.000 


Mar. 


'13 


1,00 


25.215 


10 






.175 


4,414 


4,414 


Dec. 


'Id 


.17} 


390,000 


10 










378,300 


Jan. 


'11 


.02 


2.500,000 


10 


.00! 


12,500 






187,.500 






.00} 


1.550,000 


1 


.05 


62,500 


.22} 


333,750 




Dec. 






500,000 




.06 


30,000 








Juiv 






100.000 


100 










1,831.000 


Apr. 


'10 


.03 


2.000,000 


1 






.10 


200,000 


200.000 


Aug. 


'lo 


.10 


200,000 


1 










396,000 


Aug. 


'09 


.12 


20.000 


1 










259,000 


.^pr. 


'13 


.50 


2.50.000 


10 


4 00 


1,000,000 






5,000,000 


Jan. 


'14 


4,00 


1.000.000 


3 










70.000 


Oct. 


'13 


.00! 


.500.000 


1 


.004 


2,000 


.088 


44,000 


46.000 


Dec. 


'15 


.02! 


133,551 


5 


.50 


66,776 


.75 


105,841 


1,752,795 


Sept. 


'15 


.05 


1,020 


10 






11.00 


11,220 


11.220 


Dec. 


'16 


3.00 


300,000 


1 










75,000 


Mar. 


'11 


,05 


1,000.000 


1 










430,000 


Jan. 


'08 


,03 


150,000 


5 










37,.50O 


Oct. 


'13 


.25 


1,000,000 


1 






.01 


10,000 


67,000 


Dec. 


'15 


.01 


240,000 








1.00 


240,000 


240,000 


Dec. 


'16 


.50 


400.000 


25 






.05 


20,000 


2,320,000 


Dec. 


'lo 


.05 


762,000 


1 










30,480 


•\ug. 


'11 


,02 


1,309,252 


1 


.00 


78,555 






1.169,306 


Julv 


'14 


.02 


370,000 


4 86 


,05 


18,.500 


.07 


51.800 




Dec. 






800,000 


.25 


.03 


24,000 


.11 


88,000 


244,000 


Nov. 


'16 


.03 


201,600 


2.50 


.75 


141,7.50 






161,910 


June 


'14 


.75 


747,113 


.5 


1 50 


1.120.463 


2 25 


1,681,004 


5,399.878 


Nov. 


'15 


1.00 


100,000 


25 


1 00 


100.000 


3 00 


300,000 


3,575,000 


.^ug. 


'16 


2.00 


1,000,000 


1 










40,000 


Apr, 


'11 


.01 


921,865 


1 










488,588 


Dec. 


'12 


.10 


355,682 


1 






.15 


53,352 


53,3.52 


Oct. 


'16 


.10 


900,000 


1 


.03 


27.(K)0 






07,480 


Dec. 


'14 


.03 


,500,000 


1 










275,000 


Dec. 


'U 


.01 


250,000 












4,216,250 


.\lav 


'08 


,44 


100,000 


7 










1,840,000 


Julv 


'U 


.40 


7.50,000 


1 










570,000 


Mav 


'11 


,10 


.500,000 


I 






,05 


25,000 


25,000 


Dec. 


'16 


.03 


1,999,457 




1.12i 


2.249,389 


1.50 


3,099,185 


19,970,159 


Dec. 


'16 


,50 


1,000,000 


5 










125,000 


lob. 


•13 


.12! 


1,005,558 


5 










373,000 


Dec. 


'07 


.02 


1,482,860 


1 


.15 


211,181 


.10 


140,829 


M3.558 


Nov. 


'15 


.05 


3.30.000 


1 










237,600 


Oct. 


'09 


,01 


100.000 




.10 


10,000 


1,50 


1.50.000 


1,8.30,000 


Dec. 


'lo 


1,00 


430,000 


15 


1.50 


035.000 


.90 


387,000 


12,077,000 


Oct. 


'15 


.50 


250,000 


10 


1.80 


4.50.000 


1.00 


250,000 


4.787,040 


Dec. 


'15 


' .40 


162,000 


25 


2.75 


445,000 


5 00 


810,000 


4,017,000 


Dec. 


'16 


2.00 


201,600 


3 










2,068,360 


Jan. 


'12 


10 


898,078 


.25 










80,907 


J.in. 


'13 


.02 


490 


100 






35 00 


17,500 


44,800 


Sept. 


•15 


10,00 


700,000 


5 


.24 


170,100 


.36 


312,080 


1,849,108 


Sept. 


'16 


.12 


96.1.50 


25 


3 00 


288,4,50 


7,50 


721,125 


12,900,800 




'16 


2.50 


9S.0OO 


5 










252,350 


Oct. 


'12 


.07! 


229.S.50 


10 


.60 


137,908 


1.93 


446,604 


7,871,839 


Jtilv 


'15 


1.63 


1.909,711 












181,422 


Dec. 


'10 


.02 


1,. 500 .000 


1 










87,500 


Keb. 


'10 


.01) 


5.000,000 


1 










2,041,526 


Oct. 


'11 


.03 


X09.407 


1 










217,083 


Apr. 


'13 


.04 


2.790.000 


1 


.04 


111,600 






771,200 


Julv 


'14 


.02 


240,000 


4 S6 






72 


175,.560 


17,5,560 


Dec. 


'15 


.24 


3,000,000 


1 


12 


360,000 


.12 


360.000 


10,170,080 


Dec. 


'16 


.02 


1,000,000 


1 






,12) 


125,000 


123,000 


Dec. 


•15 


.05 


101,000 


10 










420,000 


Sept. 
Feb. 


'07 


.10 


1,. 500,000 


1 










67,.500 


•12 


.01 


110,000 


2.5 


.50 


.'V5.000 


8 00 


880,000 


21,777,500 


Dec. 


•16 


3,00 


1,482,430 




1 I2i 


1,634,602 


1.25 


1,795,237 


5,092,033 


Dec. 


'16 


.50 


1,000,000 


1 










170,000 


Nov. 


•12 


.01 


4,900 


100 










190,846 


J.ilv 


'12 


.50 


1,266,.59I 


1 










363,365 


Aug. 


'13 


.04 


1,4(H,798 


10 


25 


.361.883 


.00 


845,643 


10,197,413 


Dec. 


•15 


.25 


1,500,000 


1 






10 


144,301 


180.380 


Dec. 


'15 


.02) 


SfW.OOO 


10 










750,000 


Jan. 


'13 


.50 


.3.50,000 


10 


1 . .50 


525.(XX) 


1 ,50 


525,000 


2,625,000 


Aug. 


'16 


. .5(1 


1,2,50,000 


.5 


.15 


1S7..5IK) 


43 


502,500 


3,097,.t85 


Oct. 


•15 


. 1 ". 


637,.'-)S2 


1 


.40 


251.0.(2 


40 


255,032 


814,8.57 


Dec. 


'15 




746„3K9 


1 










872,105 


July 


'11 


,<' 


1,000,000 


,5 


.04 


4(I.(NHI 






365,000 


Oct. 


'14 


.<>\ 


1,500.000 


1 










1,192,103 


Oct. 


•13 


.(HI! 


17S,.394 


1(1 










6,274,207 


Nov. 


'13 


.26 


1,000.000 


10 


.03 


:iO.:t7.5 






4i>6,625 


Dec. 


'14 


.03 


377, 3(K) 








.10 


37,7,30 


37,730 


Dec. 


•15 


. (15 


1.. 500,000 


I 






.47 


705,000 


1,0,50,000 


Dec. 


'15 


,11 


1 ,499,792 


10 


1.70 


2,n.39,6:M 


1 16 


1,7.39,7.59 


10.31S,.569 


Dec. 


'15 




I.2:«,2fl2 


1 


.00 


742,9.56 


70 


806,830 


2,012,314 


Dec. 


'16 


,1 


flO.OOO 


25 










9.420,000 


Julv 


•07 


4,l-'l! 


200,000 


25 


2 . 25 


4.50.(«in 


3.00 


600,0(X) 


4.000,2.50 


Oct. 


'15 


.75 


,300,000 


4.80 


.90 


3111,320 


.48 


1.50,600 


3,784,725 


Dee. 


'16 


.24 


I, .500,031 


1 


1.10 


1 .11.50,000 


,50 


750.016 


7,643,019 


Oct. 


'Ih 


.124 


913,433 


1 


.25 


224 ,K.5X 


.32 J 


306,613 


967.015 


Oct. 


•15 


,07} 


100 


1,000 


000.00 


.50.000 






100,000 


Jan. 


•14 


.500 00 


1 ,000,000 


1 


1.00 


1,000,000 


.90 


900,000. 


13,000,000 


Oct. 


'16 


,15 



Jiiuuan- 8, 1916 



THE ENGINEERIN(; &- .MINIXG JOURNAL 



DIVIDENDS OF MINING 
SHARES 



COMPANIES IN THE UNITED STATES— Continued 
DIVIDENDS PAID - 



COMPANY NAME SITUATION 

Tri-Mountain. c Mich. 

Tuolumne, c Mont. 

Tom Reed, e ■ Ariz. 

Uncle Sam, g.8.1 Utah 

United Copper, com Mont. 

Uniti-d Copper, pf Mont. 

United. Z.I., com Mo. 

United, Z.I.. pf Mo. 

United (Crip. Ck.) g Colo. 

I'nited, e Wash. 

(.■nitiKl Globe, c Ariz. 

United Verde, c Ariz. 

Ui:ili (Fish Springs), e.l — Utah 

I tah Copper, c Utah 

Utah Con., c Utah 

Utah-.Wx, c Utah 

Vall.y View, g Colo. 

Victoria, g.s.l Utah 

Vindicator Con., g Colo. 

Wasp No. 2, g S. D 

Wellington, g Colo. 

West End Con., g Nev. 

White Knob pfd., g Calif. 

Wilbert, l.s Utah 

Wolverine & Ariz., c Ariz. 

Wolverine, c Mich. 

Work, g Colo. 

Vak 6.1 Colo. 

Yankee Con., s.l.g Utah 

Yellow Aster, ? Calif. 

Yellow Pine, z.l.s. Nev. 

Yosemite, g- . . CaHf. 

ukon Gold, g Alas. 

Total , 





Par 


Issued 


Value 


1(30,000 


$25 


800.000 


1 


909,.5.5.5 


1 


500,000 


1 


450,000 


100 


.'50,000 


100 


92,400 


.5 


lS)..j5e 


25 


4,000,100 




1.000,000 


1 


23,000 


100 


300.000 


10 


100,000 


10 


2,797,182 


10 


300,000 


5 


528,000 


5 


1,000,000 


1 


251,000 


1 


1,500,000 


1 


.500,000 


■ 1 


10,000,000 


1 


1,788.486 


1 


200,000 


10 


1,000,000 


1 


118.675 


5 


ri0,000 


25 


1,500,000 


1 


1.000,000 


1 


1,000.000 


1 


100,000 


10 


1,000.000 


1 


24,000 


10 


3,500,000 


5 







1914 
Per 
Share 



1915 
Per 

Total Shore 

$11.14 ,7.-.n $0^18 



100,000 

2S.S00 

1,050,000 



To DaU- 

Total 

$1 ,4.'iO,000 

520,000 

2,443,7.-)7 

470,000 

5,962,500 

1,500,000 

27,490 

312.782 

4-10,435 

40,000 

2,576,000 

36.397,000 

281,860 

32,711,896 

9,150,000 

66.000 

240.000 

2O7,.5O0 

3,262.500 

.549.466 

6.50.000 

536..519 

100.000 

10.000 

23.735 

8.520.000 

172,500 

2,007,685 

167„500 

1,172,789 

893,088 

125,893 

7,672,000 



$75,383,387 $884,222,042 



Total 
$154,624 



6,904,082 
600,000 
66,000 



225,000 
82,.500 

.300.000 

178.849 
80.000 
10.000 
53.423 

.540.000 

160.000 



Mar. 
S<-pt. 
Aug. 
Mav 
Oct. 
Jan. 
Jan. 
Nov. 
Dee. 
Dm. 
Dec. 
Dec. 
Dec. 
Oct. 
Dec. 
Mar. 
Dec. 
Dec. 
Nov. 
Dec. 
Nov. 
Nov. 
Dec. 
Oct. 
July 
Sept. 
Jan. 
Dec. 
Dec. 
Dec. 
Dec. 



IRON. INDUSTRIAL AND HOLDING COMPANIES 



.Amalgamated, p Mont. 

.\m. Sm. & Ref., com U.S. 

Am. Sm. & Ref., pf U. S. 

Am. Smelters, pf . A U.S. 

Am. Smelters, pf. B U. S. 

Bethlehem Steel Penn. 

Cambria Steel Penn. 

Crucible Steel, pf Penn. 

Cahfornia Expl 

leral Development U. S. 

Great Nor. Ore Minn. 

Guggenheim Expl U.S. 

Inter'l Nickel, com U. S. 

' ern'l Nickel, pf U.S. 

Inland Steel 

ern'l Sm.& Ref U.S. 

Lackawanna Steel, com — N. Y. 

tional Lead, com N. Y. 

tional Lead, pf N. Y. 

Old Dominion, c Ariz. 

Penn. Salt Penn. 

Penn. Steel, pf Penn. 

Phelps, Dodge & Co U. S. 

Republic I. & S., pf U.S. 

St. Mar>-'s Min. Land Mich. 

Slos.-.-Sheffiold, com Ala. 

Sloss-Sheffield, pf Ala. 

U. S. Red. & Ref Cr.lo. 

D. S. Steel Corp., pf U.S. 

U. S. Steel Corp., com U.S. 

U.S.Sm.,Ref.&Min.,eom. U.S. 

U.S.Sm.,Ref.&Min..pf. . U.S. 

Vulcan Detinning. pf U. .S. 

Wam-ickl. &S U.S. 

White Knob C. & D., pf 

Total 



1.538.879 


$100 


$5 00 


500.000 


100 


4 00 


500.000 


100 


7.00 


108,300 


100 


6 00 


300,000 


100 


5 00 


149.000 


100 


5,00 


900,000 


50 


2 50 


244,365 


100 


3.50 


231,617 






29.988 


100 


3.00 


1,500,000 


100 


..50 


833,732 


25 


3,.s7i 


379.253 


100 


10.00 


86,661 


100 


6.00 


100,000 


100 


4 00 


349,780 


100 




206,554 


100 


3 00 


243,676 


100 


7.00 


293,353 


25 


4 00 


100,000 


50 


6 00 


165.000 


100 




449,346 


100 


10.50 


204,169 


100 


5.25 


lliO.OOO 


25 




100.000 


100 




67.000 


100 


7.00 


99.646 


100 




3.602.811 


100 


7.00 


5.083.025 


100 


4 25 


351,073 


50 


2.25 


486,269 


50 


3.50 


15.000 


100 




148.671 


10 


2.42 


200.000 


10 





S8.079.1I5 
2.0O0.000 
3..500,000 
1.020.000 
1.. 500.000 

745.400 
2,2.50,000 

855,275 



89,964 

750,000 

3,222,969 

3,803,150 

534,756 

' 400,000 

619,660 
1,705,732 
1,173.412 

600,000 



25,219,677 

21,602,856 

789,995 

1,702,146 



4 00 
7 00 
6 00 



3 75 
27.50 
B 00 



5 00 
4 00 

20.00 
2 00 
8 00 

7 00 

7 00 



3 50 



$13,318,995 

2,000,000 

3,500,000 

1,009.,800 

1,500,000 

905,250 

2,250,000 

427.638 

28.139 

134,946 

750,000 

3,123,100 

10,654,028 

534,756 



619,660 
1,705,732 
1,466.765 

400.000 



9,000,01)0 

408.338 

1,280.000 

469,000 e 

25,219,677 



$103,444,983 
27.333.333 
53.958,333 
10,529.800 
15,500,000 

3.924.120 

22.960.000 

19.261.451 

28.139 

2.993.910 
11.250,000 
23,323,327 
25,500,466 

8,759,558 



-Aug. 
Dee. 
Dec. 
Oct. 
Oct. 
Oct. 
Nov. 
Dec. 
Oct. 
Dec. 
Dec. 
Oct. 
Dee. 
Nov. 



349.780 
9.035.544 
30.972.404 
7.320.478 
17.058.000 
13.201.000 
45.6.59.304 
15.731. 1.S3 
6.520.000 
2.008.000 
7.134,6.50 
1.360,294 
.39.5,513.014 
222,360,439 
6,362.181 
16.309.693 
1,155,000 
1,422.468 
80.000 



$82,592,194 $1,128,980,.S43 



May 
Jan. 
Dec. 



Dee. 
Nov. 
Oct. 
Nov. 
Dee. 
Julv 
Oct. 



S3 


77 




(Ml 




(Ml 




.5<) 




25 




7.5 




.62t 


1 


75 



^i 



FOREIGN MINING COMPANIES 



Amparo. g.s Mex. 

.Ajuehitlan. g.s Mex. 

Rato])ilas. g.s Mex. 

Beaver Con, 8 Ont. 

Blanca y Anexas, s Mex. 

B C. Copper, c B.C. 

Buena Tierra, 8.1 Mex. 

Buffalo, s Ont. 

Butter's .Salvador, g C. A. 

Canadian Goldfields, g Can. 

Cananea Central, c Mex. 

Caribou Cobalt, s Ont. 

Casey Cobalt, s Ont. 

Chontalpan, g.s.l.l Mex. 

City of Cobalt, a Ont. 

Cobalt Central, s Ont. 

Cobalt Lake, s. d Ont. 

Cobalt Lake (holding) Can. 

niaga-s, s Ont. 

Crown Reserve. 8 Ont. 

Cobalt Town .Site, s.c Ont. 

Cobalt Town Site. b.iI Ont. 

Con. M. & S. of Can Can. 

Dolores, g.s Mex. 

Dos Estrellaa, g.s Mex. 

Encifio y Anexas, s Mex. 

El Favor, g Mex. 

El Oro, g.s Mex. 

ElUa.vo, g.s Mex. 

pome. 8 .-. .. Ont. 

Eaperanza. s.g Mex. 

Granby. s.l.c B.C. 

Greene Cananea, c Mex. 

Greene Con. c Mex 



COO 

600, 

1.000, 

244, 

1..500! 
5.000, 
3.000, 

300. 

,S00, 
1.768. 

199, 
45, 



58, 



3.500, 

1.147, 

200, 

500, 



$0 14 


$280,000 


$0 06 


$120,000 


$1,640,883 


Nov. 


•15 


$0 03 










■'12,500 


Oct. 


'12 


25 










.55.870 


D.H-. 


•07 


.01} 


.03 


60.000 


.06 


120,000 


.V89.S79 


Oct. 


'1.5 


.06 


.90 


63.000 






1,943,000 


Mar, 


'14 


.90 










61,5.19.8 


Jan. 


'13 


.15 






.24 


80,190 


160.380 


Dec. 


•14 


.24 


.28 


'280.000 






• 2.757.000 


Julv 


•14 


.05 






1.08 


164,025 


3.966.075 


Oet. 


•15 


.24 


002J 


110.000 






290.000 
2.913.020 


Julv 
Julv 


;i4 


.01} 


07i 


75.000 


11! 


11.5.000 


215.000 


.■x-pt. 


•15 


.09 


.36 


89.284 






148.807 


.Mav 


•14 


.12 


3,00 


21.()()0 






.57.7.50 


Apr. 


•14 


7.5 










139.3S5 


.Apr. 


•09 


.03 










188.460 


AU(E. 


•09 


.01 


.05 


1.50.0IKI 






465.000 


Mav 


•14 


.025 


.24 


14,-,. Mill 






328.0.50 


Mav 


•14 


.24 


1.50 


I.aill.illlll 


fiO 


480,000 


7.720.000 


Aug. 


•15 


..30 


.24 


l.'l.,M.", 


06 


106,129 


6,067.032 


Julv 


•1.5 


.02 


.96 


484.2.50 






947,700 


Mav 


•14 


.48 


.45 


200.000 






l,(M2,-259 


Apr. 


•14 


.10 


8.00 


464.3,52 


18.00 


464,3.52 


2,17.5.005 


Oct. 


•15 


2 00 










1.374.866 


J.in. 


•u 


221 










10.335,000 


Dee, 


■13 


1 .50 


5.03} 


1.5.105 






30,105 


Mar. 


•14 


3 Ml 


.02 


70.01X1 






210,000 


Apr. 


•14 


.01 










8,668,418 


Julv 


•13 


-•24 










140,410 


Apr. 


•11 


.15 






1 00 


500,000 


500,000 


Dw. 


•15 


.50 


.24 


115,4-25 


.48 


2;«).850 


12,013,882 


Julv 


•15 


.24 


3 00 


449,955 


3 00 


449.955 


5,990,931 


Nov. 


•15 


1 50 


3 00 


1.4.5S.02I1 






4.371.647 


June 


•14 


1 IX) 


I 00 


1 .000.0011 


.50 


.500.000 


10,044,400 


Dec. 


15 


.V) 



COMPANY NAME SITIATFON 

Guanajuato D., pf., s Mt-x. 

H.-dley Gold BC. 

H.illinger, g Ont. 

Jimulro, c.s M<*.\. 

Kerr Lake, s Ont. 

La Rose Con., s <*nt. 

I>-RoiNo. 2, g B.C. 

Lucky Tigpr Com., g Mex. 

McK.-Dar.-Sav., s Ont. 

Mexican. 1. pf Mrx. 

M.-xicoMines of ElOro.g.s. Mex. 

Min. Corp. of Can. s Ont. 

Mines Co. of Am Mex. 

Montezuma, L, pf Mex- 

N. Y. & Hond. Ros., g C. A. 

Xipissing, s Ont. 

Nova Scotia C. * S.. com. N. S. 

Nova Scotia C. & S . pf. N. S. 

Penoles. s.I-g. . Mex. 

Percgrina M. & M.. pf Mex 

Peterson Ijike, s Ont. 

Pinguico, pf., s Mex. 

Porcupine-Crown, g Ont. 

Rambler-Caribou, c B. C. 

Right of Way Mines, s. . . . Ont. 

Rio Plata, s Mex. 

San Rafael, g.s Mex. 

Santa Gertmdis, g.s Mex. 

San Toy Mex. 

Seneca-Superior, s Ont. 

Sorpresa, g.s Mex. 

Standard, s.l B. C. 

Temiskaming, s Ont. 

Tern. & Hud. Bay, s Out 

Tretheivay, s Ont. 

Wettlaufer-lxjrinin, s Ont. 

Tot.il 

a Two classes. 6 New series only. 



THE EX(4IXEET?ING cr MlXIXCi .TOUENAL 



Vol. 101, No. 





FOREIGN 


MINING 


COMPANIES— 


Continued 






























SHARP 




1914 




19I.-J 
















Per 




Per 




To Date 




Lati'Sl 




l«*u.-il 


V:llu.- 


Sh.ire 


Total 


Share 


Total 


T<,lal 


nai 


e A 


mount 


ID.tHHI 


SUK) 


$2 m 


$.■«)().()(«) 


$2 .10 


S300,(K)0 


$214.3.50 
1..S24.000 


.Ian. 
Dec. 


•10 
•15 


S3.(X) 
1 (« 


1 


1.9.T 


1,170,01)0 


2 IK) 


l,.-)(iO,000 


4.170.000 


Dec. 


•15 


.20 




1(10 










1.055,000 








oai.iwo 

1,49S,(>2.> 
120,000 




1 00 


li()0,()00 


1 00 


Of 10.000 


0,120,000 










1.20 


S0!),17(i 


(iO 

4S 


499., ->S8 
.5S,320 


5,424,.587 
1,. 530,900 


Oct. 
Die. 


•15 
'15 


.05 

,24 




SO 


ii:i4,s():i 


(ia 


493.583 


3,2«3,39l 


Dec. 


•15 


.09 


2,247,()n2 




21 


472,014 


12 


209,724 


4,()07,7(H 


Oct. 


'15 


()3 












1,018,7:50 


Oct. 


•14 


()3 




4,S(i 


1 <)2 


;i4o,!).'o 






4,4.58,745 




■14 


.90 






12". 


2.-)l).:i7,-. 


25 


518,7.50 


778.125 


Si-pt. 


•15 


12! 




10 










4.9.5S.(i00 


.luiv- 


•13 


. 12', 




11)0 










402.(MX) 




*12 






10 


1 20 


240,000 


1 (10 


240,000 


3.790,(KK) 




•15 


.40 


1.200.(K)0 




1 2.". 


l,.'i()0,()00 


1 00 


1,2(HI,()()() 




(llt. 




, 2,» 






4 .'.() 


27(),(HI0 






4,440.(K)0 










UK) 


00 


():i.uoo 


12 00 


127.200 


1 .295,000 


Dee 


■15 


12 00 


12(1.(1(10 


l."i 










t;.3(il,tiS7 
328.(156 


S,pt. 


•10 


3.-*) 




1 


.().); 


l.Sfl.OOO 


0.51 


189.000 


378,000 


Oct, 


•15 


.01 ; 




100 










S40.(KK) 


Oct. 


•13 




2 000.000 


. 1 


.09 


l.S0.(HJO 


12 


240.000 


420.(K)0 


Oct, 




.03. 




100 






0> 


35.000 


310.(M)0 










1 


.01 


IC.S,-).-) 






543.7.59 




■14 


.01 














345.745 




'13 






'*! 










1,442.3.S0 


Jan. 


•14 


. .50 


1..3(iS.000 


4 . SCi 






.24 


3M,500 


2.4.55.292 


Nov. 




.24 




1 










530.(K)0 








47.S.SS4 


1 


.70 


3:i.'>.2is 


.70 


335.21S 


9S1.212 
3,979,240 


Dec. 
.Ian. 


■15 
•11 


20 
.34, (XI 






.2.f; 


47."i.OOO 


.124 


2.50,000 


l.,SO(l,(KM) 


Dec. 


•15 


.05 


2.."JI0,0(MI 
7.7(il 








.03 


75,000 


1.4.59,1.50 


Dec. 


•15 




1 


U 00 


69,840 






1.940,2.50 


Nov. 


•14 


3,00 


1 .000.000 


1 


().■> 


50,000 






1.001 .998 








1.41(i..V.I0 


I 




















$15,231,122 


sio,a8r.,3S4 


$177,340,970 









■ HoIdiu(£ company, if OixTatiiiR i-onip:t 



B)mtm ©ir fh 




ami 



Compiletl frot 



ual Reports of the ResptM-tivo Companies 



Name of Mine 


Situation 


Year 


T,.MS 


Profit 


nivid,-T„u 


Tons 


Keet 


T,in 


Tun 




r S 


1911 
191 1 


,59l).,-.19 


$102,1143 
17().()21) 


$2i)(),:i5ii 
1 11,020 


Wi8,7.3G 


4,. 587 
4,5.55 


^2 1,8 


SI 15 


■Manka Mexican 


Alas.-r.S 


1 4 7* 


Mi^'va Tre.idwelL. 


Alas. 


1911 


91l),2.----. 


1,351, 111:; 


1,1IX).1)U0 






2 (12 






.. Alas. 


1914 


1,5S,.>I 1 


2,>7,93',l 


1(12,180 










Allouez 


.. U.S. 


1911 


3,51, 1. -.7 


1 1 1, .•.:;( 












Amalgamalecl Zinc 


. . Au?. 


'.-1914 
3-1914 


217, :>M, 
l|-,,-.,l3S 


£3l,:i,5i; 














r.S.-Mex. 


1914 


1,2(10,702 


9,031. ,".115 


8,017,4.50 












i-s. 


1914 




11.4(18,439 












Arizona Conner 

Ashanti Goldfields 


I'.S. 


•13^I4 


1 .079.9,50 


l-2.vs,255 












W.AL 


•I3^14 


!I7.293 


114.5, 7'.1 


(■147,3'>7 


432,500 


18.-27S 


20 00 


14 7s 




Aus. 


'13-'14 


127.8.5(1 


(.11,1.7 


• 1.'. ;^i 


,.,;,, .111. 










U.S. 


1914 


,321.433 


IM,.' : ; 














\.?. 


1914 


,50.42(1 


Ll'i,--'.; 


ilj, i:.:i 


nil, .".1,1 








Brakpan 


Tran. 


1914 


1122. .573 


i;24,'.,iiiiu 


i.J25.0UU 


2,190.000 


24.:!S9 


70 




BritL-h Broken Hill 


Aus. 


5-1911 


2S.512 


L'l7,i;io 




1.053,250 








Britwh Col.itnbia C<'|m>' i 


lie. 


1914 


19:i.2s9 


—,39,7115 












Broken Hill North. 


Au!-. 


' 1914 
J-1914 


1,511.()2J 
102.735 


tl,57,ll,58 
Lion, 121 


£1.50.000 


3,000,000 








Broken Hill Block 10 


All.'. 


■I 1914 


37.s.5:i 


— (,■1,(191 


1,I2„50() 






7 35 








;-i9i4 


23.810 


11,215 


LIII.IHK) 










Broken Hill Block 14 


.\u». 


J-1914 


19. .821 


flKIS 


LIO.IKM) 










Broken Hill Proprietary. 


Aus, 


S-1914 
3-1914 


139.991 
121,310 


tl.-J),7l4 
(.125,1111 


il07.l),50 
£59,0.50 












.Xii.s. 


; 191! 
3-1914 


172.17s 
112.7,50 


LI II, KM) 
i;(19,'252 


£140.000 




0,.5I10 


n 81 
(1 31 


.) , S( , 




4,911 




I'.S. 


1914 


10.237 


123,9(14 


9 1 .809 


21,000 




17,70 


10 :' ■ 




Mex. 


1914 


1(1.307 


1-5.908 


ll(1..5(Kl 


:i00.000 




00 




BuiTalo 


Ont. 


•13 '14 


77.(11(1 


388. 1S7 


(1(10.00(1 


.54.110 










Aus. 


1913 


,52.079 


t,-,0.,572 


L-47.1115 


145..5S2 




13 20 


s 




, . , l'.8. 


1914 


327,210 


1,II7,I2S 


(111.919 


1.030,000 








Caluniit A Arizona 


. VS. 


1911 


!■ 1 ,7nj 








0,328 






Camp Binl 


US. 


'13^14 


.',o, .', , 


L7(l,292 


£45.-500 


25,709 




20,10 




Carn Bna & Tincrt>fl 


Eng. 


!-ini4 

V1914 


29,373 


ij;l,i.M 
■ 1283 








5.20 
5 12 




a-nlcnnbl 


IS 


1914 


138,13(1 


-:i,2i:! 








2(11 


J tl^ 


Centennial Eureka . . 


r ,*^ 


1914 


,5S.3(15 
















IS, 


1911 


(111,S,54 


(1.58.175 








3 44 


2 ■■ 


Champion Ret f 


Ind 


•13-11 


211. ,934 




I.i:is,(iii7 


I77..3S4 








Chino . 


rs 


191 1 


1,92,;, 705 


3.222,.579 


2,1119.0(15 


90.27", 155 








City & Suburban 


Tran, 


1914 


321,211 


r248..V.0'« 


t201,(KK) 


7,">8,7()i» 


10.905 






City De.p 


Trai., 


1914 


,505.S()0 


1)3.59,0:13 


£■29(1.875 






9 , 27 




OiniagaH 


(Int. 


•13-'H 


.51 .,5-22 


9S9,1.IS 




21 ,U ,!>' , 


2.29,> 








Iran, 


1914 


.578. KM) 


t2:til,22l 


tl90,0(M) 


2,L'L'i 1,11, 




11 12 




Con«. .Main IWf 


Trnn, 


•13-'I4 


211.2.57 


riiii,i;iH,i 












0>n«. Mining and Sii: In,,- 


lie. 


1914 


371.771 


171,012 


ic^i,;i7(i 




:i:i.l4(i 








r s 


1914 


732.,X29 














Croin Mi,,,,. 


ii-.i. 


191 1 


2.2.S7.(i(K) 


£990.,57:i 


(.■799,090 


9,3119,000 








Crown Re»rv,- 




' 1914 


31.(135 


2:t9.147 


425.515 




4,0.511 


23,40 






r s 


1911 


51.701 


127,803 


1,80,(XKI 




11. .5.59 






IJaviit-naly I'N'-l 


IS, 


13 -11 


.52.105 


— 108,020 













Note — Abtio'viilionn u.i-:l i: 

En«,. Brilinh Mm (Cornwalll ; H< 

Rho'l., Uhodesia; Sib„ Silxria: S, 

— I.ofi8 f*ir the year, ♦ Ctibi 

t .Superintendent, Charciw I' 



above table: Ahw„ Alaaka; .-Vus. Australia: B, C, British Columbia; Braz., Brazil: Can., Can.ada: Cap. CI, 
n „Hondur.w;In.l ,Imli.i; Malay, Malay State-: Mex,, Mexico; N,S,\V„ New .South Wnle«: N, Z. .Vow Zi.aliind; l>. 
.\, .•<<iMtn Africa; Tai„ Ta»mania: Tran,, Transvanl: V . S„ Unileil Slae.-«: W, Af,, W.-st Alrica. 
'^ank, JKirxthair, J Seecmd half. All pn>ni«and diviilendH are in (hillars ( 



(ill, Nnlioiial Meiallurgic il Co,, Chnrcas, .H. L. I',, Me 



January 8, lOlG 



THE KNCIXKKlMXf; Cr MTNINC JOFlfXAL 



87 



DATA or TIIF, WOHUrs J'HINTII'AI, MINES— (ContinucrlJ 

















Develop. 


Yiild 


Co»t 


NaniL' of Mine 


Situation 


Year 


Tiiiis 


Profit 


Dividends 


Tons 


Fcf.t 


■roi. 


per 
Ton 


Detroit Copper 


. U.S. 


1«14 


477, .-)82 




280.000 




20,375 






Dolcoath 


. Eng. 


!-1914 


57,2.'->4 


i;510 








5.73 


5 73 






?-1914 


48,0,58 


1898 








6.03 


5 93 


Dome 


. Ont. 


'14-'15 


248,5.50 


315,179 




2,782,811 


12,098 


4.25 


2.97* 












£199,820 
£31 ,.500 


3,240,000 
475,093 








Durban-Roodepoort 


Trnn. 


1914 


170,238 


£.30.341 




5.12 


3.99* 


Durban-Roodepoort Deep 


1 ran. 


1914 


■J'.l'.t.ll'H) 


t:r,7,2:',7 


£33,000 


1,303,400 




6.62 


5 69* 


















11.63 
6.64 


9.45 
4 70» 


East Rand Proprietary . . 


Tran. 


1911 


l,s:ii,n.'-,(j 


ir:',i.,l.-,7* 


£428,032 


5,400,0(K) 




Esperanza 


.Mi'X. 


1914 


120,975 


319,907 


157,500 


200,000 tails 
1 18,365 


13.277 


8,59 


5 95 


Federal Mining and Smelting . 


r.s. 


1914 


414,741 




.599 ,.305 


1,0.37,090 


7,2.50 






GaikaGold 


Hl.od. 


'13-'14 


36,927 


£29,126 


£27,349 


1(KJ,770 




10.85 


6.30 


Geduld 




1914 




£96,968 


£46,125 


1 ,9IJ0.IXW 




7.86 


5.93* 


Geldenhuis Deep 


Tran. 


. 1914 


.570,600 


£129,096 


£W.I.X7H 


1,613,000 




6.66 


5.55* 


Globe & Phoenix 


Khod. 


1914 






£240,000 


194.400 








Gold field Consul 


U.S. 


1914 


338,192 


1,835,224 


1,067,744 


142,000 


30,028 


11.61 


6.19 


Gold Roads 


U.S. 


1914 


107,846 














Great Boulder Pcrseveranre , 


Aus. 


1914 


245,555 


£27,996 




595,007 




5.16 


4 61 


Great Bculder Propriftary . . . 


Au8. 


1914 


190,117 


£.300,632 


£262,000 


560,647 




13 40 


6 77 


Great Fingall 


Aus. 


1914 


44,006 


— £25,821 




63,360 




8 10 


10 95 






1914 


384,690 


015,792 


1,000,000 




31.859 


10.00 


8.41 


Grenvdle 


I'.ng. 


S-1914 
S-1914 


21,483 
24,515 


£1,869 








6 08 


6.50 


HedleyGold 


B.C. 


1914 


78,484 


388,228 


300,000 


413,000 




10.16 


5 21 


HoUinger 


Ont. 


1914 


208,936 


1,786,679 


1,170,000 




10.622 


12 87 


4.50 


Homestake . 


U.S. 


1914 


1,587,774 




2,210,208 






3.88 




Hornsilver 


U.S. 


1914 


24,121 






10,000 








HuUiGold Mines 


Ind. 


1914 


33,425 


£ll,OSl 


£9,783 


04,000 




11.71 


10.10 






'13-'14 




72,000 


29,820 




2,311 










1914 








97,143.000 


102,006 






Iron Blossom 


r.s. 


1914 


40.480 


306,1.50 


400,000 


S22.23 


14.07 


Iron Silver 


U.S. 


1914 


.52,490 


174,629 


100,000 




4,914 






Isle Royale 


U.S. 


1914 


474,349 


24,374 






9,919 






Ivanhoc 


.\U3. 


1914 


218,420 




£105,000 


998,718 




S.08 




Jumbo Extension. . 
KalEurli 


U.S. 


'14-'lo 


16,420 


339,373 


125,317 


86,750 




39.64 


18.97 


Aus. 


'13-' 14 


127,820 


£101,330 


£96,000 


200,000 


2,665 




4.09 


Km Lake 


Ont. 


'13-' 14 


33,955 


620,785 


615,000 










Knights Central. . 


Tran. 


1914 


284,960 


£42,752 




430,500 




5.39 


4.64» 


Ivnitihts Deep. , 


Tran. 


'13-' 14 


1,112,820 


£135,865 


£74,352 


2,480,000 




3. 52 


2.94* 


ta.kr View& Star 


Aus. 


'14-'15 


218,124 


£37,1.30* 


£32,000 


426,301 




5.69 


4.80* 


Langlaagte Estate 


Tran. 


1914 


589,619 


£156,054 




886,396 




5 91 


4 02 


La Rose 


Ont. 


1914 


54,020 


. 217,979 


749,313 


47,467 


8,000 






I-e RoiNo.2 


B.C. 


'13-' 14 


26,679 


£6,193 












Lena Goldfields 


Sib. 


'13-'14 




£50,558 


£.57,914 






7.21 


7.41 


Liberty Bell 


U.S. 


1913 


179,178 








5,662 


5.44 


3 95 


Lonely Reef 


Rhod. 


1914 


61, .590 


£48,005 


£.50,023 


110,042 




14.69 


11.21 


Magna Copper. 


U.S. 


'14-' 15 


44,075 






95,000 


12,311 






Main Reef West 


Tran. 


'13-'14 


212,852 


£56,640 




520,440 




6.90 


5.63 


Mammoth 


U.S. 


1914 


2.35,146 














Mason & Barry 


Spain 


1914 


259.238 




£27,775 










Mason Valley. 


U.S. 


1914 


75,0.38 


—40,274 






1,995 






Mass Copper 

Meyer & Charlton . . 


U.S. 


1914 


309,354 


64,546 




1,250.000 


2,760 




1.98 


Tran. 


1914 


177,176 


£207,608 


£140,000 


469,839 




11.42 


5.73 


Miami 


U.S. 


1914 


1,096,633 






36,500,000 


22,865 


4.04 


2, 87 


Modderfontein B. 


Tran. 


1914 


440,100 


£402,000 


£385,000 


2,772,500 








Montana-Tonopah .... . 


U.S. 


'14-' 15 


63,754 














Mount Boppy. ... 


Aus. 


1914 


70,059 


£35,416 


£14,325 


199,559 




9.08 




Mount Elliott . 


Aus. 


'13-'14 


37,875 


2.59,000 


178,000 


.533,750 








Mt. I.vell 


Tas. 


5-1914 


163,596 


£61,954 


£80,424 


3.122,723 




8.85 


7.00 


Mt. Morgan . . 


Aus. 


'13-' 14 


303,428 


£199,054 


£200,000 


3,125,000 




15.00 


11 94 


Mysore 


Ind. 


19 M 


304,375 


£379,725 


£3,50,750 


1,011,000 


26,249 


14.36 


7.98 


Namaqua Copper 


Cap.Col. 
U.S. 


1914 


35,021 


£30,070 


£23,582 


80,875 








Nevada Con 


1914 


2,640,294 


716,977 


2,249,389 


41,020,296 




2.67 


2 40 


Nevada Wonder ... 


U.S. 


■13-'14 


48,578 


247,743 


281,636 




4,126 


14.47 


4.65 




Tran. 


1914 


359,850 


£124,580 




825,896 


4,701 


4.96 


3.22* 


New Heriot 


Tran. 


1914 


154,228 


£120,32 * 


£74,750 


588,315 




8.87 


5.08* 


Newldria 


U.S. 


1914 


62,578 


—45,014 


10,000 




12,.367 


4.70 


5 44 


New York & Honduras Rosari.i 


Hond. 


1914 


109,170 




329,814 


418,978 


15,700 


11.36 


8.31 


New Kleinfontein 


Tran. 


1914 


001,000 


£272,942 


£115,1.54 


2,890,731 




6.48 


4 27* 


Nigel 


Tran. 


1914 


141,400 


£30,351 


£16,732 


150,400 


9,866 


7.29 


6 25 


Nipissing 


Ont. 


1914 


80,037 


1,578,715 


1 ,3.80.000 


225,474 


12,148 




11.60 


North Butte 


U.S. 


1914 


3.37,415 


3.58,215 


035,000 










North Star 


U.S. 


1914 


107,250 


.560,115 


450,000 




2.053 


10.40 


5 43 


Nourse Deep 


Tran. 


'1.3-'14 


539,800 


£160,879 


£1,55,216 


2,443,700 




6.88 


5.42 


Nundydroog 


Ind. 


1914 


89,950 


£97,818 


£99,050 


164,800 




16.40 


11.12 


Old Dominion 


U.S. 


1914 


129,213 




445, .500 




15.665 




5.20 


Ooregum 


Ind. 


1914 


154,898 


£149,272 


£138,270 


266,260 




11.52 


6.83 


Oriental Con 


Chosen 


'13-'14 


.301,162 


622,780 


644,780 


822, ,500 


32,378 


5. 50 


3 08 


Oroyo-Links 


Aus. 


1914 


145,130 


£14,416 


£14,375 


160,111 




5.24 


4 70 


Osceola 


U.S. 


1914 


1,108,447 


353,077 


289,541 




4,8.36 


1.77 


1.46 


Otavi 


W.Af. 


'13-' 14 


50,070 . 














Ouro Preto 


Braz. 


1914 


80,138 






112,678 




6.94 




Plymouth Con 


U.S. 


1914 


44,773 


£221 








4.37 


3.17 


Poderosa 


Chile 


1914 


5,206 


£28,514 




2,740 








Portland 


U.S. 


1914 


275,129 


590,595 


360,000 




15,592 


0.91 


4. SO 




W.Af. 
N.Z. 


1914 
1914 


270,732 
33,1.50 


— £7,708 




551,137 
80,000 ■ 




7.65 
7.00 


6.82 






Quincy 


U.S. 


1914 




205,. 593 


55,000 












Tran. 


1914 


6SI'.,33() 


£698.493 




2,493,924 




5.61 


4 27 


Rav Con 


U.S. 

Spain 

Tran. 


1914 
1914 


2,127,000 


2,(115,378 
£899,939 


1 ,089,322 
£737,500 


74,765,789 


75,201 


3.13 


2.17 


Rio Tinto 




Robinson Deep .... 


'1.3-'14 


619,140 


£324,532 


£275,000 


1,. 5.33,000 




6.68 


4 13* 


Rooiberg Minerals . . 


Tran. 


'13-'14 


11,422 tai 
29,181 mi 
48,230 


s £51,131 


£31,. 500 


20,097 




18 28 


12.02 


Rose Deep , , 


Tran. 


1914 


44,931 






4,707 


6.00 


5.tH; 


Santa Gertrudis. . 


Mex. 


'13-'14 


393,836 


£126,627 




967,000 












1914 


74,550 




2.">0,000 


1,200.136 


19,116 


9 44 


3.90* 


Simmer & Jack Prr:i). 


Tran. 


'1.3-'14 


7li9,'.M10 


£322,678 


£337, .500 


2,320,000 




5 00 


3.00 


Simmer Deep 

SonsotCwalia.. 


Tran. 


1914 


043,111)0 


£39,037 




l,»29.l)00 




4.03 


3.7.5* 


Aus. 


1914 


ll>ll,963 


£42.148 


£48,7.50 






B 55 


6-29 




Eng. 


1914 


69,312 


£2,0.53 


£4,375 






5.53 


5 (» 


South Kalgurli 


Aus. 


1914 


110,179 


£9,034 




105,14tt 


5,036 


5.75 


5 35 


St. John del Key 


Braz. 


'14-'15 


191, .IIH) 


£141,092 


£64, 020 






11.58 


7 92 


St, Joseph I.e.ad Co. 

Sudan Goldfield . . . 


U.S. 


1911 


1,'1S9,977 




258,390 










S.Af. 
Aus. 


19 M 
■13-'ll 


iCi,i.-,i; 
■.'ii'i.iiri 


l-.'ii,iino 


£200,666 










Sulphide Corporation 






U.S. 
U.S. 


■13-' 14 
1914 


4.S5i7'.)i; 


I,.,MVJ 






5.424 
66. 165 


11. 3S 




Super.or & Pittsburi' 

Talisman, Con 




N.Z. 


•13-' 14 


41,680 




£120,7.50 


S7..115 




26.14 


13. <S 


Tamarack 


■ U.S. 


1914 


.57,440 


—174,944 








2.30 


5.44 


Temiskaminit 


Ont. 


1914 




81,422 














rs. 


1914 


485,057 


751.893 


000,I)(H1 










Tharsis Sulphur and Copper 


Spain 


1914 


.501,037 




£1.56,2.50 











88 



THE EJNGINEERINU or illXING JOURNAL 



Vol. 101, No. 2 



DATA OF THE WORLD'S PRINCIPAL MINES--(Contii 



Develop- Yield 















Reserves, 






^n 


Name of Mine 


Situation 


Year 


Tons 


Profit 


Dividends 


Tons 


Feet 


Ton 


Tomboy . . 


. . . U.S. 


•13-' 14 


137,456 


£32.5.890 


£02,000 


452,000 




$7 37 


$5 07 


Tom Reed 


. . U.S. 


'13-' 14 


4.S,100 








5,695 


24 09 




Toropah Bi-lmont.. 


. . U.S. 


'14-' 15 


181,424 


1,4.56,098 


1.462,504 


226.921 








Tonopah Extension 


U.S. 


•13-'14 


58,022 


80,399 






16,091 


10.63 


9.25 


Tonopah Mining 


U.S. 


•14-'15 


147,261 




1,000,000 


102,056 


18,487 


15.02 




Trimountain. 


U.S. 


1914 


227,251 


58,639 












Tronoh 


MaLav.. 


1914 


442.394* 


— £20,109 












United States Smelting, R. & M. Co. . 


U.S.-Mex 


1914 




2,265.641 


2,228,892 












. . . I'.S. 


'13-'14 
















Utah Consolidated 


u.s 


1914 


201, S51 






256.521 








I tab Copper . 


U.S. 


1914 


0,470,1 US 


8,078,491 


4,827,885 


342.500,000 




2 51 










lti,02.-) 


— i"i,S35 












VanRyn 




1914 


4S3,0UU 


1301. 34,j 


£299,223 


1,692,349 




8 12 




V lUa^e Depp 




1914 


G(I0,2.W 


£2.89,002 


£225,392 


2,85:1,470 




6 78 










183,105 


£145,010 


£99,181 


753,358 








Waihi Grand Jc 


x.z. 


1914 


185,720 


£76,030 


£.57,056 


173.000 








Wallaroo & Moouta- 


.\us. 


1914 




£39,997 


£24,000 










Wanderer 


Trail. 


•13-' 14 


I50,or,o 


£1,789 




102,300 








Wasp No. 2.. 


US. 


1914 


176,140 


45,465 


30,000 








1 29 
5.b9 


West Rand ^oIl^ 


Tntii. 


HI 14 


310,750 












Winona 


U.S. 


1914 


123,339 












Witwatersrand De^-p 


Tj-an. 


1914 


51,S,10H 


£251,168 


£178,750 


1,707,400 








Witwatersranri Gold. 


Tian. 


1914 


503.:;."jO 


£271,023 


£234,812 


1,221,879 








Wolhuter 

Wolverine 

Yuannii 


Trau. 
. . U.S. 
. . .\us. 


'13-' 14 
'13-' 14 


.■i.s2,700 
182,127 
50,094 


£.53,853 
81.075 


£107,.->00 


999,400 


15.410 

625 


6.08 
2 66 


4.47'" 

2.21 

4.71 

,2e 


Yukon Gold 


U.S. 


1914 


11,90!),355* 


1.184,819 


1,0.50,000 








Zinc Corporation 




1914 


144,(i(i7 


£129,398 


£49,139 


1,185,870 







' Working cost, t Cu.yd. — Less for ye 



ILaws of I19I14 Siiad I19I15 

If proof wtTc iioeiled of the rapid growth of the idea 
of eoiupcnsatioii of workmen for injuries received in the 
course of employineiit as a substitute for the old liability 
acts, it would he tound in Bulletin No. IS.") of tlic Jiureau 
of Labor Statistics of tiie United States Department of 
Labor. The buHctin presents the legislation for tiie years 
1911 and 191.5, togetlier witii amendments to a number 
of earlier laws. 

The new laws of 1915 cover eight states: Colorado, 
Indiana, ,Maine, .Montana, Oklahoma, Pennsylvania, Ver- 
mont and Wyoming, liesidcs the Territories of Alaska and 
Hawaii. Also a Presidential order e.xtended tiie Federal 
Compensation Act of 19fiS to workmen engaged on or 
about tlie Government railway in Alaska. Thirty-oue 
states and the territories of Ahiska and Hawaii now have 
conipen.satioii laws. A Federal statute covers also aliout 
one-fourth of the civilian emjiloyees of the United States. 
All of this legislation has been enacted since 1908, and 
practically all of the c.\i.«ting legislation in the .states 
since 1910. 

Of the new laws of 191.5, one, that of Wyoiiiiiig, must 
be clas.sed as a compulsory-insurance law, while tlio.se of 
Maryland and Oklahoma are (ompulsory-comiiensatioii 
laws. In the other states the law piTinits the employer 
to elect or reject the compensation act. In case he rejects 
it, however, he is deprived of the customary defenses 
under tiie liability laws. 

Some of the lu'wer laws have certain features that are 
of sjieeial interest and worthy of mention. The Oklahoma 
.statute, for example, a])])lies only to cases of nonfatal 
accidents, while in Wyoming all awards, whether for death 
or disability, are in the form of lump-sum ))ayiiH'nts 
arbitrarily fi.xed liy the statute without regard to the 
earning capacity of the injured jierson. The Alaska 
statute al.so jn-ovides for lump-sum payments except for 
temporary di.sability. Legislation elsewhere has very 
generally jirovided for periodical payments gradiiateil 
according to wage loss, and this metliod is favored by 
practically all authorities. 

Of the new laws of 1915, the Wyoming act is the least 
liberal, the conipeiisatioii foi- death being limited to funeral 



expen-ses of .$50 and a maximum death benefit of $2,000. 
Ill comjiarison with this, the Colorado statute provides 
for a ma.ximum of $^,500, while the ma.ximum of the 
Alaska statute is $(i.OOO. In ca.ses of temporary disability 
the Colorado law is less liberal than any other, as it 
jirovides for no compensation for disabilities not extending 
beyond three weeks. In the statutes of other states, the 
waiting time has usually been fixed at one or two weeks, 
no state except Colorado fixing a longer period. 

Special hoards or commissions for administration con- 
tinue to be prel'envd, the laws of Alaska and Wyoming 
being the only ones enacted during 1915 which do not 
have this ]iiovision. In Maine, Maryland, Oklahoma and 
Vermont the administrative authorities arc given no 
powers other than those relating to the administratiiui 
of the compen.sation acts. In Hawaii county boards with 
functions restricted to the lonipensation act are provided 
for. In Louisiana the law is administered by the courts. 

The prevention of accidents, as well as coinpen.sation. 
is ]n'ovided for in a number of the new laws. Thus the 
Industrial Commission of Colorado is charged not oiilv 
with the ailniinistration of the compensation art. but also 
with the iluty of factory and mine inspection, the enforce- 
ment (if woman- and child-labor laws, and safetv laws 
,;;enerally. Corresponding provisions are found also in 
the laws of Indiana and Moiitan.,. 

The bulletin contains a eonipai'ati\e analysis of existing 
workmen's compensation laws in the Imi}! of a large fold- 
ing chart. Notwithstanding the elforts that have been 
made to bring about unirormily in compensation legis- 
lation, a comparison of ilie laws of the .'It states thiit have 
thus far enacted compensation laws shows the widest 
diversity in the methods and anunints of compensatiiMi 
payments and the scope of the various laws. Amending 
legislation is in general of a liiieralizing character, either 
including new disabilities, as occupational diseases, or 
increasing the disability allowances, or introducing other 
details. 

Promise of future progress in compensation l(\iii.slatioii 
is found in the jn'ovision for a commission in ITtah for 
the jnirpo.so of drafting a compensation bill. 

liiilletins 1'?f> and 1S5 thus give a complete report on 
compensation insiii-aiice. 



January 8, 1!)1') 



TIIK KN(;iNEEl{IX(; cr MlXIXfJ JOURXAL 



89 



MeteM^iTEV of ILeeidl nim 1911i 



P.V II. (). IFoiM 



During the last year there was little ehaiige in the 
practice of smelting silver-lead ores as a whole, although 
a mimljer of improvements were introduced at tlie 2:5 
plants in operation in North America {Eng. and Min. 
Journ., 1915, Vol. 99, p. 59) which, with 124 blast fur- 
naces, have an annual capacity of over 7,000,000 tons of 
charge. In the treatment of nonargcntiferous ores the 
introduction of the Newnam mechanical ore hearth marks 
a radical innovation that is bound to become a perman- 
ent improvement. The refining of lead bullion has gone 
on in the usual way. The European War has drawn into 
the anuies many investigators, so that there is compara- 
tively little to record from the laboratories which usually 
make a careful study of metallurgical reactions. 

Lead Ore axd Its Handling 

It is not often that jamesonite occurs in sufficient quan- 
tity to form an ore, but this is the case (Raymond, Eng. 
and Mill. Journ., 1915, Vol. 99, p. 9) near Zimapan, 
Hidalgo, Mexico. Concentration tests of the ore with 
8% Pb and 4% Sb have given an enriched product with 
25% Pb and 15% Sb; and blast-roasting the concen- 
trates in a Dwight-Lloyd machine has shown that the 
antimony and arsenic are readily oxidized and volatilized, 
leaving behind a sinter low in these elements, well-suited 
for smelting in the blast furnace with siliceous ores 
carrying precious metal. 

The purchasing of ores, including that of lead, has re- 
ceived the attention it has needed for a long time in 
the publication by C. H. Fulton (Technical Paper 
83, Bureau of jMines). While schedules have been fre- 
quently given out, rational analysis of the subject has not 
received the attention it deserves, considering its im- 
portance in connection with lead works which are largely 
custom smelteries. 

Smelting in the Ohe Hearth 
The working of the ore hearth in the Mississippi Val- 
ley has become about as much standardized as that of 
the blast furnace in other parts of the country, but at 
every smeltery there is the complaint of hard and un- 
sanitary work in spite of the improvements made to miti- 
gate the evil. It remained for W. E. Xewnam (BtiU. 
of A. I. M. E., Oct., 1915, p. 2139) to make the radical 
departure from rabbling by hand to doing this mechan- 
ically, and thus not only overcome the disadvantages of 
hard and unsanitary labor, but improve the work in 
quality and quantity. The ordinary ore hearth, 4 to 5 
ft. long, requires in 24 hr. six men, and treats about 
7,000 lb. of galena concentrates. The Newnam 8-ft. 
hearth treats 21/2 times the amount of ore, and while 
it demands the same number of men, the work is light, 
so that in hot weather the rate of production is the 
same as that during the winter. 

In a test run of four weeks with a galena concentrate 
containing 72.5% Pb and 15.1%, S, the Newnam 8-t't. 
hearth treated 13,179 lb. ore with 3.G% coke breeze. 
It collected in pig lead, 67.44%; in gray slag, 15.18%; 
and in dust and fume, 17.38% of the lead; and elim- 

•Professor of metallurgy, Massachusetts Institute of Teoh- 
nolopy, Boston. Mass 



mated 87.9% of the sulphur of the ore. The correspond- 
ing figures for the 4-ft. ore hearth were: Ore treated, 
509 lb., and coke breeze required, 8.8%. The lead re- 
covered in the products was: Pig lead, 55% ; gray slag, 
1().2%i ; dust and fume, 28.5%. The sulphur eliminated 
was 80.(')%. With a concentrate assaying 82% Pb and 
11.2% S, the lead recovered with the Newnam ore hearth, 
in pig lead was 91.15%; in gray slag, 4.25%; and in 
d\ist and fume, 4.6%. Of the S content, 94.7% was 
driven off. 

Smelting in the Blast Furnace 

The smelting works of Salida, Colo., discussed by F. 
D. Weeks {Bull, of A. I. M. E., 1915, p. 1961) and 
those of El Paso, Texas, treated of by H. F. Easter {op. 
cit., p. 1493), have many things in common, as have 
most blast-furnace plants of the country, but they have 
certain features that give each an individual character. 

The smeltery of Salida was the first to install the 
Dwight-Lloyd sintering machines and has done consid- 
erable experimental work with them, in preparing the 
ore for the six blast furnaces of tlie plant which are 
still fed by hand. The cleaning of the lead bullion forms 
an interesting feature. The bullion is tapped from the 
lead well into pots holding 10 bars and transferred to 
hemispherical kettles of 30 tons' capacity; there it is 
stirred with comjjresesd air, drossed at 450° C, and the 
dross freed from adhering lead with a Howard press. 
Stirring is continued until the temperature has fallen to 
360°, and the dross rising to the surface is skimmed. 
The temperature is now raised to 380° C., and dip sam- 
ples are taken for assay. The temperature is then raised 
to 425° C. and the bullion siphoned into molds. By pay- 
ing attention to the temperatures given, the dip sam- 
ples upon assay give check results which show that the 
silver was uniformly distributed in the lead. 

The character of the work at El Paso has changed 
greatly in recent years. Erected in 1886, burnt in 1900, 
and at once rebuilt, the smeltery was considered at that 
time a model plant. It has since undergone many 
changes, but one characteristic has remained the same — 
the unloading of ore by hand and the making up of ore 
beds with wheelbarrows. The earlier character of the 
smeltery of being a lead plant has also changed in that 
lead has become subsidiary to cojiper. The increase of 
the copper content of the lead charges has also had its 
influence upon the blast-furnace work and upon the hand- 
ling of its products. Formerly the lead was removed 
from the 46xl62-in. blast furnaces in the usual way 
through the lead well, and matte and slag were tapped 
together into slag pots and transferred to settling re- 
verberatory furnaces, from which the slag was drawn into 
waste-slag pots and the matte tapped to be granulated. 
The high copper content of the blast-furnace charges has 
been the cause of the closing up of the lead well; hence 
lead, matte and slag are tapped together from the breast. 
The lead is collected in an oblong forehearth 2 ft. 6 
in. by 9 ft. 2 in. and 2 ft. deep, lined with 4.5 in. of 
nuignesite brick. Matte and slag overflow into a larger 
oil-lired hearth, 10 to 20 ft., from wlviih sla>r overflows 



90 



THE EXGINEEEING &- MINIXCI JOUEXAL 



Vol. 101, No. 2 



continuously and matte is tapped periodically into a 
ladle, to be hauled to the converting department. The 
experiences had with the settling of matte have been 
of great value. Two facts stand out clearly : Whenever 
one has to deal with ores which contain considerable 
amounts of blende, blast roasting leaves most of the 
zinc sulphide unchanged because its oxidation requires 
time. Zinc oxide in the ore may enter the slag, zinc sul- 
phide does not. The sulphide is taken up to a certain 
extent by the matte, but most of it forms a muck which 
floats on the matte and cannot be tapped. A partial anal- 
ysis gave: Insoluble, 66; Ee, 19; CaO, 3.4; Zn, 24.3; 
S, 21; Pb, 10; Cu, 4.6%. The other fact is that in a 
reverberatory settler, a copper blast-furnace slag in the 
presence of a leady copper matte takes up lead and sil- 
ver, and leady copper matte in contact with lead takes 
up lead. 

Eegulatiox of Blast-Fuexace Work 

The top of the charge of lead blast furnace ought 
to be always cool. It has been noticed (W. C. Smith, 
Eng. and Min. Journ., 1915, Vol. 100, No. 18) that in 
working up storage-battery residues, the top becomes hot. 
This is attributed to the presence of PbO,, which is 
readily dissociated into PbO and by heat; it gives up 
one molecule of oxygen near the throat and oxidizes 
ascending CO. Heating the residue before charging or 
diminishing the amount on the charge corrects the condi- 
tion. Premature oxidation of the coke is prevented by W. 
D. Kilbourn (IT. S. Pat. 1,148,782) by coating it with a 
fusible lead-bearing mixture. In normal work (Min. Sc. 
Press, 191.5, Vol. Ill, No. 94) the gas passing off the 
top of a charge does not contain over 0.5% vol. 0; if 
this amount is exceeded the reduction in the furnace is 
insufficient. Another sign for tlie quality of the work is 
the lead content of matte and slag. With 12% lead in 
the matte and 0.5% in the slag, reduction is good. 

In a pamphlet, "Metallurgical Smoke" (Bull. No. 24, 
Bureau of Mines), C. H. Fulton has discussed briefly 
the leading devices used in lead aiul copper smelteries 
for collecting flue dust. The Cottrell electric-precipi- 
tation process has been introduced in the lead depart- 
ment of the Consolidated ^Mining and Smelting Co., at 
Trail, B. C. (G. Guess, Can. Min. Journ., 1915, Vol. 36, 
No. 37), in which 384 vertical pipes 12 in. in diam- 



eter handle 100,000 cu.ft. per minute of gas. The col- 
lected dust assays 70% Pb. Alice Hamilton, who pre- 
pared last year a monograph upon lead-poisoning in smel- 
teries (United States Bureau of Labor Statistics, Bull. 
141) has extended her investigation to the manufacture 
r.f storage batteries (United States Bureau of Labor Sta- 
tistics, Bull. 165). Of the 7,400 men employed in 1912 
in 12 American smelteries, 1,769 were lead-poisoned, 
while in England, of 2,400 men, only 56 were thus af- 
fected. In the manufacture of storage batteries there 
were afflicted in the United States 17.9% of the men 
engaged in the work, in Great Britain 3% and in Ger- 
many only 0.97%. These startling figures show how 
little attention has been paid in this country to removing 
dust and fume from the working places and enforcing 
cleanliness in general. The ''Report of the Selby Smelter 
Commission," published as Bulletin 98 liy the Bureau 
of !Mines, contains much valuable original information 
on tlie effects of smelter smoke upon human beings, an- 
imals and vegetation. It deserves careful study. 

DeSILVEEIZATIOX ilETHODS 

In the Parkes process, practical experience accom- 
panied by pyrometric measurement has determined that 
the best results are obtained if the zinc-silver crust is 
removed from tlie kettle at about 535° C. In view of 
the research of Carpenter and Whitley, which showed, 
contrary to the earlier work of Petrenko, that there 
exists only a single chemical compound of zinc and sil- 
ver, ZugAgj, freezing at 665° C, F. C. Newton (Bull. 
of A. I. M. E., 1915, p. 474) carried out experiments 
at the desilverizing works of Mavirer, N. J., to form this 
compound. He stirred the zinc into the lead bullion 
heated to 750° C. and removed the crusts as quickly as 
they formed until the lead became too cool to allow 
skimming. He found that the silver content of a crust 
diminished as the temperature of the lead rose. The 
cause of this is to be sought in the dissolution of ZujAg, 
in lead; for whicli no data are extant. 

A recent investigation by J. C. J. Cunningham [Zt. 
anorr/. Client. 1914, Vol. 39, No. 48) shows that there 
exists an eutectic of PbO-CuO witli 32% CuO, freezing 
at 698° C. This furnishes an explanation of the well- 
known fact that coppery litharge runs more freely than 
when the lead bullion is free from copper. 



Mefts^IMrgV of Copper iim 1915 



Bv Lawukncic Aodicks* 



The year 1915 proved as strange as its predecessor in tlie 
conditions of the cojiper industry. From great depression, 
with reduced outputs, lowered wages and almost no visible 
market, the year has seen a comijlete reversal to record 
productions, tlic liighest wages ever paid and for wirebars 
a price level ol' wliich no producer can justly complain. 
Tlie efTc'ct of such revolutionary changes in the financial 
foundation of the industry lias naturally been to confine 
ti'clinicaj advances largely to the few great companies 
uhoBC resources enable them to adopt for a term of years 
a policy inde])endent of the exigencies of the moment. 

Practically all tlie copper-producing plants of the coun- 
try, excluding Mexico, are l)eirg operated at maximum 



•MetallurKloal enKliicfr, 114 I.llicrty .St., N'ew York City. 



capacity. The new International smeltery, at Miami, 
and that of the United Verde, at Clarkdale, have been 
successfully placed in operation. The I'cal limit of attain- 
able ]u-<)(liiction is now refinery capacity. While some 
3,()()0,()(»(» II). per month has been added to the Tacoma 
refinery and a net increase of at least 10,000,(100 \h. will 
soon be in operation at Great Falls, the refineries at pres- 
ent are holding back the smelters and further refinery 
extensions may be looked for, 

A most remarkable devclo))ment in the ])ractice of flota- 
tion has taken place during the year. It has not been 
confined to any particular type of apparatus. In many 
cases it has been found ])ossible to dispense entirely with 
tlie use of mill. mikI llic clieMpcst of the common oils have 



.Tiuiuiirv S, l!n() 



THE KXGIXKEHIX(; Or MlXIXfi JOUP.XAL 



91 



larguly rcplaceil tlic expensive (.lieniicals used a year ago 
as froth-foniiing merliums. It is possible now to talk 
about tailings running as low as 0.1% copper in some 
cases, and concentrates running as high as 25% in copper 
are made from 2% ore. These great advances have come 
about through intelligent experimentation and attention 
to detail and, of course, can be obtained only with sulphide 
minerals. Fine grinding with its attendant expense is 
also predicated. Various schemes for coating oxidized 
minerals in such a way that they can be recovered Ijy 
flotation are being tried out, but without notable success 
as yet. 

Unfortunately the theory of flotation^ has not kept 
pace with the practice, and the fact that no rigid applica- 
tion of physical law has as yet been adduced to cover 
the known facts has made much more difficult the disen- 
tangling of the complicated patent situation. 

At the Anaconda plant, in line with the new jjolicy 
of abolishing the so-called first-class ore and sending 
everything to the concentrator, at the same time taking 
advantage of the improved recovery obtainable by flota- 
tion, radical changes have been made in the concentrator 
equipment and the capacity of the mill has been brought 
up to 15,000 tons per day-. The Jigs on the roll and 
Huntington-mill floors have given way to roughing tables 
producing concentrates and coarse tailings, which are re- 
ground' in Hardinge mills in closed circuit with Dorr 
simplex classifiers. The slime is then treated in Minerals 
Separation machines and Callow cells. The final tailings 
are to be made into brick. The flotation concentrates are 
sent to Dorr thickeners followed by Oliver filters, result- 
ing in a product running 18% moisture. 

One of the most remarkable results of the successful 
development of flotation has been the effect upon the 
whole scheme of metallurgical treatment. It is now pos- 
sible, given a suitable ore, to make tailings lower in value 
than the slag resulting from smelting the same ore raw, so 
that even quite high-grade ores can be profitably crushed 
and concentrated. As the flotation concentrates are ex- 
ceedingly fine, they must be either roasted and smelted 
in a reverberatory or sintered and smelted in a blast 
furnace, thereby adding the handicap of sintering to the 
already difficult situation in which the blast furnace finds 
itself, owing to the recent advances in reverberatory prac- 
tice, thus lowering reverber-itory costs. 

PiiOGRES.s IX Leachinc; and Ore Roastixg 

The marked success of flotation on sulphide ores and 
concentrator tailings has to all appearances definitely re- 
moved this particular field from leaching operations, and 
this has largely checked the work so generally under wa\' 
a year ago. The 2,000-ton unit at Anaconda has success- 
fully been placed in operation on stored tailings where 
there is likely to be some oxidation from exposure. At 
last accounts no marked advantage of either process — 
leaching or regrindiiig and floating — has been announced. 

The large phint at C'huquicanuita, Chile, has apparently 
been started with remarkable freedom from technical diili- 
culties, cathode shipments now being regularly received 
in this country. The large-scale exi)eriments at Douglas, 
Ariz., have been shut down on account of the flotation 
showing; the work done has been fully covered in recent 

'Rickard, "Min. and Sci. Press," Vol. Ill, p. 3S5. 

-■"Anode," February, 1915. 

'Mathewson, "Min. and Sci. Press," Vol. III. p. .112. 



technical papers^. At Lake Linrlen, where a large plant 
lias been in course of construction, the work has been 
delayed. Some of the details of the process have Ijeen 
made public', however. The older processes using am- 
monia as a solvent of copper oxide have failed en account 
of losses of the expensive reagents used. A study of these 
losses has developed that their soiree is not so much leak- 
age of volatile ammonia as absorption by fine sand or 
slimes, and this has been minimized by using sufficienth' 
flilute solutions. 

At Ajo, Ariz., large-scale experiments are still being 
carried on, the management being practically committed 
to a wet method of handling the immense oxidized over- 
burden of the New Cornelia property. An outline of some 
ol the earlier work done here has been published^ but 
no definite statement of a finished process has been made. 
Some work is being done on both the Midland and Slater 
leaching cycles in several parts of the country by those 
interested in the exploitation of these processes. 

.\t least for the time being, therefore, flotation has pre- 
empted the sulphide field, while leaching is making good 
with oxidized ores. On mixed sulphides and oxides no 
decision has been reached, but it will likely be a draw, 
individual cases depending upon precious-metal values 
and other local considerations. An excellent resume of 
the work done on leaching copper ores up to the first 
of the year was presented to the International Engi- 
neering Congress at San Francisco'. 

There has been no new development in the field of 
roasting during the year. The large increase in the pro- 
duction of fine, wet and often clayey flotation concen- 
trates has in many cases altered the character of the 
charge to be roasted and naturally increased the problem 
of dust recovery. One interesting experiment is being 
tried at the new International smeltery, at Miami, where 
the usual roaster dust chambers have been omitted en- 
tirely, Cottrell treatcrs being relied upon to recover the 
dust values. 

Blast-I'irnace and Revkrbkratory Smelting 

The sweeping changes at Anaconda following a success- 
ful duplication on a trial furnace of the use of coal-dus"; 
firing and side charging inaugurated at Copper Cliff, 
have been completed, and the rebuilt furnaces are fultillint; 
all expectations. The net effect of the alteration is ilw 
change from a furnace 19x112 ft., smelting 240 tons o:: 
charge with a coal ratio of 41/4, to a furnace 25x144 ft., 
smelting 650 tons of charge with a coal ratio of 7. Xot*' 
that efficient coal drying and grinding machines* are stand- 
ard, the decision between coal and fuel oil rests chiefly 
upon the cost per British thermal unit theoretically ob- 
tainable, and oil will likely be displaced in several large 
installations. The advantages of side charging are of 
course applicable to a furnace burning either fuel. Most 
leverlieratory ])lants have considerably modified their 
methods of dum]i'ng charges. 

The marked developments in reverberatory practice 
have relegated the blast furnace rather to the background, 
Init the latter is too firmly entrenched to be swept away 
easily, and the ])rcsent situation should spur its champions 
on to new trials along the line of substituting fuel oil for 



'Addicks, "Met. and Chem. Eng.," Vol. XIII. pp. 531 and 748 

'Benedict. U. S. Pat. 1,131.986. 

"Ricketts, "Trans. American Electrochemical Society." 

'Austin, paper No. 160. 

■M.itliewson. "Eng. and Min. Journ." Vol. 100, p. 45. 



92 



THE EXGIXEERIXG e- MIXING JOURXAL 



Vol. 101, N^o. 2 



coke and of delivering blister direct, which have been 
lather inconclusively worked out in the past. Those in- 
terested in sintering methods «ill naturally do all possible 
to help the blast furnace to regain its popularity. Per- 
haps the greatest opportunity for further improvement in 
either method of smelting lies in reducing the metal losses, 
tvhich, in many cases, are now costing more than the smelt- 
ing. A valuable contribution in this direction is a ser- 
ies of papers that recently appeared in the JournaP. 
The large research staffs now being maintained by some 
of the companies should be able to throw some light upon 
what seems to have been a neglected problem. 

The only new development in converter practice is an 
indirect one, the 25xl75-ft. furnace at Anaconda for re- 
treating converter slag. The proposed charge is 700 tons 
of slag and 350 tons of fine ore per day, the final slag 
going to waste. The results of this work should be 
very interesting as indicating what can be done in the 
way of slag cleaning by re-treatment. 

FIME-COXDEXSATIOX PRACTICE 

But four commercial methods of recovering values in 
smeltery fumes are in favor, and there is much diversity 
of opinion as to the choice of these. ^Miere local condi- 
tions make it profitable, the direct manufacture of sul- 
phuric acid is undoubtedly indicated. This has been lim- 
ited chiefly by the lack of a local market and by the 
fact that sulphuric acid cannot readily be thrown away 
without serious consequences of some kind. The logical 
use is in leaching oxidized ores, and as leaching practice 
improves this market will broaden. Acid is readily made 
from roaster gases, and Anaconda already produces 100 
tons per day. Where the attitude of a neighboring farm- 
ing community is hostile, the baghouse has much in its 
favor on account of the perfect ridding of the issuing 
gases of visible solids. The Cottrell apparatus has made 
great progress in the last few years, and it is now gen- 
erally admitted that the early troubles with the original. 
Balaklala installation, were not due to any failure of the 
])rinciples involved. The (Jarfield plant, where the con- 
verter fumes are "treated," has proved an entire technical 
success. On the other hand, where no legal questions are 



involved it is a debatable matter whether the additional 
recovery above well-designed dust chambers warrants the 
additional investment and operating cost, always remem- 
bering that there is a heavy treatment charge to apply 
to the foul sludge recovered. However, the fine dust from 
flotation concentrates and the possible elimination of 
chamber investment as being tried out at the Internationa' 
smelter already referred to (and any case where high sil- 
vei values are present in the smoke) favor tlie Cottrell 
process. 

Altogether, therefore, the dust chamber with suspended 
wires continues to find the most general favor, but much 
work in a variety of directions is in progress to develop 
a process whereby some actual revenue may be derived 
from the sulphur and other nonmetallic values in smelter 
smoke. Anyone interested in smoke damage should ob- 
tain the report of the Selby Smelter Commission". 

Progress ix Copper-Eefixixg Methods 

Work continues to be done upon improved methods of 
treating anode slimes. A new process" for eliminating 
the copper before furnacing has been successfully applied 
at the Raritan Copper Works. The slimes are filtered 
and then mixed with the theoretical quantity of strong 
sulphuric acid required to convert the copper into sulphate, 
the resulting mud being pumped into a steel basin 7x13 
ft. and heated to a temperature below the point of fusion 
or of decomposition of CuSO^. The copper is then 
leached with hot water as a nearly pure sulphate. More 
or less than the theoretical amount will not do. 

An improvement in the electrolytic purification cycle 
has been worked out at the Chrome refinery'-. Advantage 
is taken of the tendency of the liquor in an active elec- 
trolytic tank to stratify in respect to copper contents and 
in this way a solution leaner in copper than the average 
in the tank is drawn off for recovery of byproducts and 
elimination of impurities. 

The data for the excellent evaporative efficiency shown 
by tlie Chrome waste-heat boilers have been published in 
detail'^. This installation includes a combination of 
boilers, economizers, forced and induced draft and cold 
feed water preheated by admixture. 



MetlaM^irgy of Ziimc in 1915 



5y W. K. Incalls 



Conditions in the zinc-smelting industry of the United 
States in 1915 rendered dollars so easy to get by anylwdy 
\>Iio had smelting capacity that the attention of smelt- 
ers was devoted chiefly to the making of spelter in any old 
way, there being neither need for making improvements 
nor time to spare on them. In the Kansas-Oklahoma re- 
gion there was a reversion to primitive methods, for 
the reason that they were the easiest in the inauguration 
of new smelting capacity, haste being a prime considera- 
tion. Many of the smelters who repaired old plants are 
\ising the auger machines of 20 years ago for the manu- 
facture of their retorts and are making condensers by 
hand. This is being done even in .some important plants, 
with the result, it is said, that zinc extraction is not 

•Lathe, "Engr. and MIn. Journ.." Vol. 100. pp. 215, 263 and .105. 



exceeding 80%, ^\hile there is an immense breakage of re- 
torts and condensers, especially in the smelting of Rocky 
Mountain ores, some of which contain as much as 20% 
iron. These plants will be run only so long as the price 
for spelter is high and the smelting margin is large. When 
the price and margin shrink, their owners expect to quit 
the business, and in the meanwhile do not intend to spend 
any money on plant that is not absolutely necessary. 

In general the zinc smelters of the United States who 
gave any thought to the excellence of their practice con- 
fined themselves to the improvement of details. Thus one 



"Holmes, Franklin and Gould. Bulletin 98. U. S. Bureau of 
Mines. 

"Keller. U. S. Pat. 1,110.493. 

•=Pym and Green, U. S. Pat. 1,148.798. 

"Brower, "P:nK. and Mln. Journ.." Vol. 99, p. 892. 



.lanuary 8, 1916 



THE ENGINKKIJING or MINING JOUIiXAL 



93 



smelter reported better extraction of zinc i'rom low-grade 
ore, not owing to the introduction oi' any novelty in prac- 
tice, but simply to increased familiarity with the liehavior 
of these low-grade ores and to the insistence of more care- 
ful work in the handling of the furnaces. Another smelter 
reported the introduction of several mechanical improve- 
ments that resulted in greater economy in the handling 
of material. Other smelters experimented with mechani- 
cal gas producers. The Edgar Zinc Co. continued its ex- 
periments with coal-dust firing, but as yet has achieved 
no great success with this. The United States Smelting 
Co. inaugurated an experiment for the collection of zinc 
dust by the use of prolongs on the condensers, a reversion 
to old practice that was almndoned in Kansas many years 
ago, but may be economical under existing conditions. 

The Kansas-Oklahoma region was favored with a better 
supply of natural gas in 1915 than for a long time pre- 
vious. This was due to some small concerns selling out 
and to the increased pumping of gas that could not be 
put into the high-pressure lines for distant delivery. 

In the Kansas-Oklahoma region, the most important 
improvement in blende roasting is the lowering of the arch 
in the Zellweger furnaces, and in some instances the doub- 
ling of the furnace, the rabble being carried on the same 
shaft for the two furnaces. This, together with the 
lowering of the arch, saves fuel, the admission of un- 
necessary air being reduced. The original Zellweger fur- 
naces were enormous wasters of fuel. With the recent 
imijrovements, they are still bad, but not so bad as they 
were. 

At Argentine, Kan., the National Zinc Co. is building 
six Spirlet furnaces, which will be ready for operation 
early in 1916. 

The Doxoea Smeltery 

One of the important commercial features of 191.5 was 
the expansion of the United States Steel Corporation — 
through its subsidiary, the Edgar Zinc Co. — in the zinc- 
smelting business. The new plans comprised the erection 
at Donora. Penn., of a plant designed for the smelt- 
ing of 100,000 tons of zinc ore annually and the production 
of about 40,000 tons of spelter, the distilling equipment 
of the plant being about 9,000 retorts. In speed of con- 
struction all previous records were broken in this plant. 
Earth was first turned over about the end of June, and 
spelter was first made on Oct. 20. However, the plant will 
probably not be completed until about Mar. 31, 1916. 
Even that will be only about nine months from start to 
finish. Such a construction would ordinarily take 18 
months. The Donora plant is unique in zinc-smelting 
construction, moreover, by reason of the extensive use of 
reinforced concrete in its several parts. About 50,000 
cu.yd. of concrete was laid, whereof about SO, 000 cu.yd. 
was reinforced concrete. The Donora plant comprises 6 
Hegeler roasting furnaces and 10 Hegeler distilling fur- 
naces, each of 912 retorts. It is considered likely that the 
Steel Corporation will later build a smeltery at Gary, Ind., 
or in the Illinois coal field. 

Kktort Disciiaugixg Machixes 

The United States Zinc Co. now has in operation at 
Sand Springs, Okla., six of the Simmonds discharging 
machines that were descrilied a year ago. This means 
iluit the residues are being removed from six distillation 
riirnaces with these machines, it having been found advis- 



able to have one machine for each furnace in this type 
of smeltery. At Blende, Colo., there are two machines 
in operation, one taking care of one side of two furnaces. 
With a smeltery of this type, that is, with the furnaces 
end to end, one discharging machine can easily take care 
of one side of two furnaces. It is thought, moreover, 
that if a successful labor system can be devised, one dis- 
charging machine may be able to take care of one side 
of three or four furnaces. 

At Blende the average time for removing the residues 
in the regular manner is 1 hr. 30 min. The machines do 
it in 20 to 23 min. At this plant the retort charge is 
often as much as 45 lb. per cu.ft., which is far in excess 
of the practice at other plants for a similar grade of ore. 

Machines have been ordered to equip fully the Sand 
Springs plant, which consists of 14 furnaces, 400 retorts 
to the furnace. The Blende plant is to be fully equipped. 
after which an installation will be made at the plant of 
the Kusa Spelter Co., at Kusa, Okla. 

The Grasselli Chemical Co. is also working on a retort 
discharging machine at Clarksburg, W. A*a. 

Zixc Refixixg by Redistillatiox 

The extraordinary premiums that have been paid for 
high-grade and superior intermediate spelter led naturally 
to the refining of common spelter by redistillation. A 
large tonnage of refined spelter is now being produced 
in that way. There was no metallurgical novelty in this, 
a good deal of refined spelter having been so produced dur- 
ing many years by dross and junk smelters in this country 
and Great Britain, and also in Sweden and Norway, and 
perhaps elsewhere. The dross and junk smelters in this 
country commonly perform the redistillation in large re- 
torts. The smelters in the Scandinavian countries do it 
in electric furnaces. The practice recently developed in 
the United States is novel in that the ordinary ore furnace 
is used for the purpose. Yet even that is novel only in 
ilie making of a regular practice of it. 

The same thing was tried about IT years ago in one of 
the works of the old Cherokee-Lanyon Spelter Co., then 
managed by A. B. Cockerill. Mr. Cocke rill, who was 
something of an experimenter, thought then to improve 
liis metal product by redistillation. He found that he 
could make a refined spelter assaying approximately 
99.9% Zn, but he found also that he lost about 10% 
of his zinc in doing it (by absorption in retorts, breakage 
of retorts, failure to condense, etc.), and the premium 
realized for high-grade spelter at that time was not enough 
to pay for making it in this way. When, however, the 
premium rose to 10@15c. per lb., as it did recently, the 
aspect of things was changed radically. 

Nevertheless there is some doubt as to just how much 
profit there is in refining spelter by this method under 
existing conditions, exceiitional as they are. The slabs 
of common spelter are broken up or are recast in little 
bars, and are piled up in the ordinary retorts, which are 
heated in the ordinary way. The direct cost of redistilla- 
tion is variously estimated at 0.5 to Ic. per lb., probably 
being nearer the low(;r figure than the higher. Then 
comes the cost of the zinc that is lost. This is variously 
stated at 10 to 12^( — a confirmation of Mr. Cockerill's 
experience. If the common spelter that is being redistilled 
costs 10c. per lb., the loss is Ic. per lb. If it costs 20c. per 
lb., it is twice as n\uch. The third element of cost is 
the use of smelting capacity. In normal times, when 



9i 



THE EXGIXEERING or= MINING JOURNAL 



Vol. 101, No. 2 



there is a surplus, this might reasonably be reckoned as 
nil, but certainly not so at present, when smelting capacity 
is so urgently needed. An lola furnace of (500 retorts 
is figured as taking about 30 tons of spelter per day for 
redistillation, or (iO,000 lb. Such a furnace takes nor- 
mally about 121/2 tons of calamine or roasted blende. If 
the latter, say about 15 tons of raw blende. Now if the 
smelter can make a profit of $40 per ton in smelting ore 
(he talks about such figures), he does not make it if he 
uses his furnace for refining spelter, and such use may 
therefore be reckoned temporarily as costing him $G00 
per furnace per day. or Ic. per lb. The total cost of 
refining is therefore from 3 to 4c. per lb., which is not bad 
if a premium of 10c. be realized. However, there has been 
some difficulty in bringing all of the product up to the 
liigliest grade. 

Electrolytic Zinc Prodcctiox 
Without any doubt, the most important thing in the 
metallurgy of zinc in 1915 was the inauguration of elec- 
trolytic zinc production direct from ore on a large experi- 
mental, even a commercial, scale at several places, the 
most important of these being at Anaconda. Mont., where 
the production of electrolytic spelter at the rate of about 
5 tons per dav was begun. The results are considered so 
favorable that the Anaconda company has commenced 
the erection at Great Falls, Mont., of a plant capable of 
jiroducing 35,000 tons of electrolytic spelter per annum. 
AVith regard to the nature of the Anaconda process, Mr. 
l.aist. who is responsilile for it, has written me as fol- 
lows : 

I can hardly claim that we have accomplished anything 
e.speclally new in this line, except insofar as we have done 
on a somewhat larger scale what had often been done before 
by others in the laboratory and in a smaller way. Briefly, 
the process consists of concentrating the zinc ore, preferably 
by flotation, so as to make a concentrate with as little insol- 
uble matter as possible and as rich In zinc as the nature of 
the ore allows. This concentrate is roasted in two of the 
furnaces of our copper-leaching plant, so as to produce a 
calcine containing- from 2 to S'/c sulphur, most of which is 
present as sulphate sulphur. The temperature is not allowed 
to exceed 1,350° F.. under which conditions the formation of 
zinc ferrite is not pronounced. 

The calcine, after cooling, is treated with a solution con- 
taining sulphuric acid, which dissolves the zinc and a little 
of the iron. A small amount of manganese dioxide is added 
for the purpose of oxidizing the iron, which is then precipi- 
tated by means of a small amount of jiowdered limestone. Any 
arsenic or antimony is carried down by the precijiitated ferric 
hydroxide. The resulting solution contains nothing but zinc, 
cadmium and copper, and is separated from the residue by fil- 



tration. The residue contains the lead, silver and gold and 
part of the copper originally present. The solution is treated 
w^ith metallic zinc to precipitate the copper and cadmium, and 
is then pumped through a clarifying filter-press into a storage 
tank, from which it goes to the electrolytic cells. The cell 
room contains 42 tanks, which are in no way different from 
those commonly used for copper refining. Here the zinc is 
deposited on aluminum plates. 

The solution fi-om the cells contains sulphuric acid and 
is used for leaching a fresh charge. The zinc deposits on the 
aluminum plates are stripped off every 4S hr. and sent to the 
melting furnace. At the present time we are making about 
five tons of zinc per day of a high degree of purity. 

The .\naconda spelter assays above 99.9% Zn. It is 
well known that the electrolytic spelter produced for 
many years at Winnington, England, is guaranteed 
99.i)5 9( Zn. I have often expressed the opinion that there 
was no great proir.ise in a hydrometallurgical-electrometal- 
lurgical process of zinc extraction unless use could be 
made of the anode reaction (as at Winnington) or some 
specially favorable conditions otherwise might be found 
to exist. That a])pears to be the case with the Butte ort. 
In roasting there is relatively little formation of zinc 
ferrite, and consequently zinc extraction is high. More- 
over, the ore is rich in silver, whereof 90% or so ought 
to be recovered by this process against only 65 to 70% 
by the pyrometalhirgical process. Both of these are strong 
points. Of course, with existing commercial conditions, 
electrolytic zinc may be produced profitably out of many 
ores. However, the Anaconda metallurgists are of the 
opinion that they can carry on the process successfully 
uniler normal conditions. 

Electrolytic zinc was also ju-oduced in 1915 on a com- 
mercial scale by the Weedon Mining Co., at AVelland, Ont. 
There may also have been a small production elsewhere, 
li. (J. Hall was understood to be experimenting in this 
line at Keokuk, la., and there were mie or two other 
(perations that may not yet be mentioned i)ublicly. 

Apart from tlic Anaconda work, the most ambitious 
]ilans were those of the Consolidated Mining and Smelt- 
ing Co. of Canada, which contintuMl the expi-rimental work 
begun several years ago. In the last official report of this 
company it is stated that spelter of good grade has been 
produced at the late of l.OllO lb. per day from ore from 
the Sullivan mine, and that the results were sufficiently 
])roinisiiig to warrant the building of a plant capable o1 
])i(>(Uicing 25 to 35 tons of spelter daily. Constructioi 
of IJiis ]ilant is well advanced, and it is expected to be ii* 
opci'ation early in 191(1. 



Mefts\MujiFtfy of GroM sumdl Silver 



l'.^ II i;i;r,i;irr .\. Mi-,(!1!A\v 



New .steps in the metallurgy of gold and sihrr have 
licen few during the last year. H lias liccii a most uii- 
coninioniy sterile period as regards metallurgical advances. 
Some new plants have been built, but in none of them 
lias any .serious new development nl' iiu'talluigy been iii- 
• orporated. The principal jdants of this contineMt have 
iK«n satisfied to continue in the regular way, a|)|)lyiiig 
principles of efficiency to ])rocesses already developed, but 
spending little time on any new features. 

The profliiction of gold has been stiniulatnl hv war 
coiulitions, through its requirement for the li(|ui<lalioM 
of the world's iiidelttedness. Kor this reason gold mini's 
have been worked to the limit of their ])o,ssihilitics, and 



r\cii new mini's have been (i|ii'iii'il and pnslu'd toward tin' 
|ir(iilu(ti\(' stage. In sihci'. linwcM-i', tlu- situation has 
been Miini'wliat diU'crcnt. There has been little demand 
lor till' mrtal tlirougb linaiicial sources, and the pricr 
has until rcri'iilly rrmaincd at a low point. This situa- 
tion made till' ciinilitions of sihcr producci's rather hard 
to cndurr fill' a long time. Many of the weaker operators 
bail to ri'stiirt oprratiims or discontinue entirely. During 
till' last inmitb or two of 1915 the jirice of silver took 
an n])ward (I'cnd, however, and almost immediately cstab- 
lisbi'd itself at a comfortably high level. This is said to 
be due to buying from the Orient, but the result is 
satisfactoi'v lo the iiroducer, whatever the cause. 



January 8, VJKi 



THE EN(iINEERING 6- MIXIXO JOUHXAL 



The ba.sic conditions atlendiiif^ the (listril)ution of gold 
and silver have been, as has just Ijeen mentioned, in such 
a condition as to stimulate, in the case ol' gold, maximum 
production and to deter, in the case of silver, overproduc- 
tion, the result in either case being a hesitation to attempt 
metallurgical changes of any kind. With gold the con- 
ditions required its production at maximum rate, leaving 
no time for experiment^ ; while with silver the result was 
the same, although for the reason that profits had been 
much reduced in the business and there was no disposition 
to spend money on metallurgical changes. 

Pkoghess Driiixfi the Yeai: ix ^Mexico 

Conditions in Mexico have been pretty much the same 
as during 1914. At the beginning of the year an im- 
provement seemed to be aljout to set in, hut toward the 
last quarter everything was again disarranged. During 
the part of the year that operations were possible, a 
number of the larger ])lants made more money than they 
did in normal times. This situation came about througli 
the general lack of employment for laborers. These 
people then went to work on their own hook and institvited 
ap industry of cleaning and sorting ore from old dumps, 
mining on their own account and in many cases robbing 
the best ore from mines belonging to foreigners that 
had left the country. The ore thus produced was sold 
to operating companies at an extremely low i^rice, and 
those companies having the necessaiT supplies for milling 
it and the facilities for getting the bullion out of the 
country increased their earnings through this practice. 
At the end of the year, however, about everything was 
shut down, since supplies could not he oljtained nor was 
bullion safe from confiscation by any official that happened 
to be handy. 

The rolling stock of all the railroads has practically 
ceased to exist, and now, even counting upon the best 
of intentions, it will be a long time before any serious 
operations can be carried on. AVhile rolling stock may be 
imported promptly provided there is money to pay for 
it. it will not be so easy to put the roadbed in such con- 
dition that trains may be operated over it. Three years 
of almost complete inattention have made serious inroads 
upon its ])hysical state. It is proltable that considerable 
time and much labor will be required to put the railroads 
in condition to establish a satisfactory basis for the in- 
dustries of the country. 

All the princijial camps in Mexico have suspended oper- 
ations. At El Oro it was found impossible to secure 
supplies in such quantities as to guarantee continuous 
operations, so the plants were all closed. The same is 
triie in Pachuca, where strenuous efforts were made to 
o])erate for a time, but it was found impossible. Guana- 
juato gave up the effort a long time ago, and there has 
been no attempt at regular ojierations. The Jalisco prop- 
erties also suspended, as di<l most of those of the M'est 
coast, and in fact all large works in Mexico with the ex- 
ception of a few near the United States liorder. El Tigre 
has been operating most of the time, and Batopilas o])er- 
ated a ])art of the year, but had to shut down in Septem- 
ber. Naturally, mithing new in nu'tallurgy has been de- 
veloped in Mexicti. Conditions have been too strenuous 
for any research wnrk to be undertaken. 

The Central and South American jilants producing 
silver and gold have been pu.'ihed strongly during the 
year, but new developments have been rather commercial 



tiiaii technical. In no known case ha- any new departure 
in treatment methods been in.stituted, but full attention 
has been given entirely to mechanical and commercial 
improvements. 

In this connection it is of some interest to say that 
aluminum precipitation from cyanide .'solutions has been 
receiving some additional attention during the year. The 
process Avas somewhat criticized by G. H. Clevenger in 
the early part of the year and Avas discussed again by 
E. ^1. Hamilton, who successfully instituted the process 
at the Ni])issing mill at Cobalt. Aluminum jjrecipitation 
has been established at the Butters plants in San Salvador, 
the San Sebastian and the Devisadero. It can hardly be 
doubted that ahnninum precipitation is a .satisfactory 
advance and is perfectly sure of its position in cases where 
its appropriateness has been indicated. 

The New Tough-Oakes Cyaxide Mill 

In the Canadian field developments have been greater 
than almost anywhere else. At Kirkland Lake, the 
Tough-Oakes mill, a highly developed cyanide plant for 
handling rich gold ore, was completed. This is probably 
the mo.st important plant finished and operated during 
the year. It certainly embodies the results of the mo.st 
advanced technical study. The Tough-Oakes is a 100- 
ton all-slime cyanide plant, in which a ball mill replaces 
stamps. In this case a ball mill of the Hardinge type is 
installed, the product of which goes to two Dorr dassi- 
iiers, each operating in closed circuit with a -DxSO-ft. tube 
mill. Provision is made for the introduction of copper 
amalgamating plates should that at any time be considered 
necessary. 

The slimes from the Dorr classifiers go to a thickener, 
the overflow of which is clarified and precipitated. The 
pulp is sent to Dorr agitators and a series of continuous 
counter-current thickeners. Transfers of thickened pulp 
are effected by diaphragm pumps. From the final tank 
the thickened pulp is discharged by a spigot into a 
launder, whence it runs througli a mechanical-sampling 
device and then to waste. It will be noticed that in this 
]ilant the newest developments of cyanide metallurgy are 
incorporated. 

Tlie elimination of stamjis from the metallurgical lay- 
out is a feature that is becoming increasingly frequent 
(hiring the last few years, and one that will probably 
Ijecome the rule in the future. Continuous pulp-flow and 
automatic transfer of ])uli) in solution is another feature 
of the mill. The elimination of the slime filter for the 
tailings is a feature of importance. Tiie mill design 
was under charge of the Butters-Johnston Engineering 
Syndicate. 

At Cobalt a new slimes plant was built and operations 
begun, tliis being designed to liaiulle the slime pul))s 
from a coalition of several of the Cobalt I'oncentrating 
]dants. Ojierations have been successful uj) to the present 
time. These are about the only new develoiunents in the 
Col)alt field. There has lieen consideralile jirospectiug 
in the outlying silver districts, l)ut as yet no discovery 
of great ini])ortance has come to light. 

TllK V.'ORK OF THE PoKCUPTXE DISTRICTS 

In Caiuula. in the Porcupine district, the Holliuger 
plant has increased its capacity and still another increase 
is uiidcr consideration. Hollinger, when taken together 
with its allied property, the Acme, is rapidly becoming 



5)6 



THE EXGIXEEEIXG d~ MIXING JOUEXAL 



Vol. 101, Xo. 2 



one of the great gold miues of the world and is novr 
probably the principal one in Canada. The metallurgy 
at the Hollinger mill has not been changed; it is still 
making use of the modified system of counter-current de- 
cantation, together with filtration of part of the residue. 
Stamp crushing has always been considered satisfactory 
at the Hollinger, and no change has been made in it. 
Production is continuous on a large scale. 

At the Dome, conditions have been improving during 
the year. The opening of a new and richer orebody was 
reported some time ago, and further plant improvements 
have been undertaken. Xo change in the metallurgj-, 
however, is under consideration, the system continuing 
to be stamp crushing, regrinding in tube mills and 
separate treatment of sand and slime. The plant was 
appreciably enlarged in 1914, and further enlargement is 
being considered. Dome has been rather unfortunate in 
that the irregular quality of its ore deposits is responsible 
for the impossibility of maintaining a uniform milling 
system. 

In other parts of Canada there is little of importance 
to record. In British Columbia the plants are proceeding 
about in the usual manner, with no new developments 
to report. All the properties are producing as best they 
can. 

Developments ox the Eaxd 

On the Rand the practice has been absolutely normal, 
but production has been pushed to the utmost limit. 
Because gold has been so strongly in demand to pay the 
debts of the nation, practically all gold mines have been 
made to produce to the limit of their al)ility. Those in 
South Africa, are no exception to the rule, but, rather to 
the contrary, have been more strongly urged than have 
other places, since the Rand mines form such an im- 
portant part of Great Britain's gold production. At the 
Rand mines there have been no delays due to strikes or 
other troubles, and the Rand output in general will 
]<robably be a record, at any rate, in the number of tons 
treated. The total output will probably not be so high 
as in other years, owing to the lower unit content of 
gold. 

The question of cyanide supply has been less in evidence 
than was expected in the early part of the year. The 
production of .\nierican and British factories has been 
increased as far as ])ossible, and it seems that a sufficient 
supply has been forthcoming to keep operating plants 
going. Perhaps the diminished demand from Mexico has 
been an important factor, since that country in normal 
times consumes more cyanide than the United States, 
i)ut the fact remains that, although its .source has not 
been a general sul)ject of conversation, enough cyanide 
lias been forthcoming to fulfill the actual necessities of 
all the large operating plants. I have not heard of any 
plant anywhere that had to shut down through inability 
to buy cyanide. So far as I know, there have been no 
entirely new producers of cyanide. It will be remembered 
that early in llUo several new sources of cyanide were 
suggested. These factories have from time to time re- 
corded some progress toward fitting themselves to turn 
out the material, but as yet none of them has succeeded 
in doing it. 

In the United States production has been continuous 
and con.stant, but new details in metallurgy, as is the 
lase evcrj'where else, have been conspicuous by their 
absence. A few new mills have been completed and 



some of the old ones somewhat changed, but nothing of 
great metallurgical interest has taken place. The Amador 
Consolidated milling plant, at Amador City, Calif., was 
started in ^laj-, a change of milling practice having been 
instituted. The mill contains twenty 1,000-lb. stamps, 
and to these were added two 8-ft. by 36-in. Hardinge 
mills. The capacity of the plant has been increased to 
300 tons daily, and the processes in use include amalga- 
mation, concentration and cyaniding. A description of 
this mill was published in the Journal of Aug. 14. 
1915, a flow sheet of the complete practice being shown. 
Perhaps one of the most important features of the miU 
is its precipitation department. Zinc shavings were used 
at the outset, but, owing to erratic results, a change was 
made and zinc dust installed. The method followed is 
the same as that used at the Ajax property, of Victor, 
Colo. Two five-ton tanks are used, equipped with mechan- 
ical agitators, into which the solution from the gold tank 
is run. \Mien the tank is about two-thirds full, the 
amoimt required of lead acetate and zinc dust is added, 
and by the time the tank is full it has had sufficient 
agitation and is then pumped through the filters. Wh'le 
one tank is being pumped out, the other is being filled 
and agitated. This system is said to be more satisfactory 
and economical from even- standpoint than was the zinc- 
shaving system. 

In Colorado, the Tomboy added a cyanide plant to its 
60-stamp concentration mill and has materially increased 
its output. In Xevada a new mill has been constructed 
at the Elko Prince, this plant having been designed by 
the Dorr interests and including all-sliming, agitation 
and continuous counter-current decantation. 

At Tonopah all the mills have been running and pro- 
duction has been about as usual. So far as can be 
determined at the present time, there have been no notable 
metallurgical extensions or improvements in the camp. 
All interest has been devoted to steady work and the 
systematization of well-known processes. Goldfield also has 
been producing about as usual, but this company has 
installed a tailings reclaimer and made arrangements to 
re-treat the accumulation of tailijigs below the mill. 
Much of these tailings were made while extremely high- 
grade ore was being treated in the mill, and it is believed 
that a large part of them can be treated again at 
a profit. It is stated that the company is trying out a 
process of flotation, and it seems that the prospects are 
favorable for its installation in the mill. It will be likely 
to add considerably to the output. 

Anizox.\ AXD Colorado Developments 

A new spasm of interest is attaching to the Gold 
Road-Tom Reed district in Arizona. Aside from the 
Gold Road property and the Tom Reed, which have both 
beeu working profitably for a number of years, explora- 
tion has developed in the district a number of other 
properties that seem to be in the way of making sub- 
stantial successes. Several of them are already paying 
largely in dividends, aiul it is hoped that the camp will 
become one of the large gold producers of the West. 

In the Crijiple Creek district there has been practically 
no new mctalhirgy except experiments on flotation. The 
feat of the year was the purchase of the Independence by 
the Portland Co. Some operators go so far as to .say 
that flotation will open u]> a new era of profit in the 
camp and that it will more than double its former output. 



January 8, 1916 



THE ENGINEERING &" MINING JOURNAL 



97 



lu the Black Hills all the companies have been working 
as usual, including the Homestake, but there have been 
no changes of a metallurgical nature. 

Flotation is the great puzzle of the year. Many oper- 
ators believe it will take the place of practically all the 
wet-milling systems in use at the present time ; but while 
this can probably be accepted with some reserve, it is 
nevertheless undoubtedly true that the cj'anide operator 
would do well to transfer his affections to flotation and 
learn the business as thoroughly as possible. It is not 
going to eliminate the cyanide process altogether, but in 



the cases of ores of a certain character, it will surely lead 
to such increased efficiency for concentration systems that 
there will be no room for cyanide plants. Particularly 
apt, under present conditions, is the application of flota- 
tion to the silver-sulphide ores that form the greatest 
source of silver in the western United States and all 
of Mexico and Central America. With these ores con- 
centration will become the principal metallurgical pro- 
cedure, cyanide becoming an auxiliary used for treating 
the concentrates where conditions are not advantageous for 
shipping. 



©gir( 



©f Ftotettiomi iim !9I1 



By Herbert A. Megravv 



During 1915 the flotation process was hampered by the 
status of the litigation over basic patents, just as it 
was in the year previous. The spread of the process has 
been so rapid, however, that by sheer weight of merit 
some of the important data regarding operating methods 
and conditions have broken through the reserve. Articles 
have appeared in the technical press setting forth the 
aims and objects of the process, and some of them have 
contained records from practice. A good many flotation 
articles;, however, have been written without conveying 
much real information. 

Important Facts Made PrsLic 
Probably the most important article of the year was 
that by J. M. Callow, read before a meeting of the 
Salt Lake section of the American Institute of Mining 
Engineers and to be presented at the February meeting 
of the institute at New York. This article was abstracted 
in the Journal of Dec. 4, 1915, and gave a good many 
facts about the establisliment of the Callow system of 
flotation at several different mills, presenting flow sheets 
of the mills themselves, facts concerning their opera- 
tion and an explanation of some of the theoretical bases 
of the process. 

Other important articles ajjpearing during the year 
were a description of the Silver Peak mill, of Australia, 
which appeared in the Journal,^ and also Mueller's- ex- 
periments on the use of coal tar as a flotation oil. 
Concerning the use of oils in particular, it is hoped that 
the current year will bring forth some actual experimental 
data, since that is the point that has been particularly 
kept under cover up to this time. 

As an auxiliary metallurgical process flotation seems 
to be succeeding in filling a niche that has been left 
absolutely vacant up to this time. Attempts to fill it 
through slime-concentrating machines have not been par- 
ticularly successful, hence the stampede to make use of 
flotation, which promises a signal success at that point. 
There is enormous danger, however, that the universal 
adoption of the process, even for a specific purpose, is 
likely to degenerate into its adoption for all purposes 
and, through failure, to react upon the process in a way 
that will be to its disadvantage. Some of its enthu- 
siastic adherents are recommending its use where success 
cannot possibly result. One or two failures will be more 
than likely to delay proper application. 

'"Eng. and Min Journ.," Dec. 11, 1915. 
="Eng. and Min. Journ.," Oct. 9, 1915. 



To sa\^ that flotation may be the sole process of metal- 
lurgy in a given case is to make a statement entirely 
too broad for general credence. Some ores, it is true, 
may be treated exclusively by flotation, but it is reasonably 
certain that such ores are limited in number and that the 
statement can by no means be made a widely applicable 
rule. Ores that are of a coarsely crystalline nature can 
best be treated by stage crushing and stage concentration, 
beginning with jigging. By this means a large amount 
of expensive grinding and regrinding is avoided, and 
concentrates are recovered as quicklj- as possible. Of 
course, in such case the very finely divided part of the 
ore, or slimes, had best be treated by flotation, but with 
an ore of this character there is no reason for doing any 
more grinding than is just enough to liberate the mineral 
particles and allow them to be separated from the gangue. 
In fact, it may be said that this particular point is 
exactly the one that limits the reasonable application of 
flotation and other concentrating systems. The mineral 
particles must be liberated from the gangue by crush- 
ing, and then separated by concentration. Therefore 
crushing should be carried only far enough to liberate 
these particles, and the concentration process then applied 
to separate one from the other should be appropriate to 
the size of the grain thus freed. If the grains are all 
coarse, then under ordinary circumstances, jigging, table 
concentration or any form of ordinary gravity concentra- 
tion is the one that should be applied. If the grains are 
exceedingly fine, then flotation will do the better work 
and at a lower cost. Of course it may be possible that 
in special instances, such as with very heav^- gangues 
approximating the weight of the mineral itself, fine 
grinding and flotation will have to be resorted to in order 
to get satisfactory results, no matter what the size of the 
mineral grains are. 

In general, when the ratio of concentration is low, 
it is considered better practice to begin with gravity 
concentration and finish up with flotation. When tlie 
concentration ratio is high, authorities consider it bet- 
ter practice to make flotation the principal process, 
with gravity concentration as an auxiliary. In cases 
where new and modern concentration mills have been 
constructed, based on gravity practice, it would be foolish 
to waste all the money involved in the work, and the 
part of wisdom is to use flotation as an auxiliary to the 
gravity-concentration scheme. 

Up to the present time it may be said that any kind 
of an ore in which the mineral occurs in sulphide form 



98 



THE EXGIXEERING &-■ MINIXG JOFRXAL 



Vol. 101, No. 2 



is susceptible to flotation. As yet there has been uo 
great success in concentrating oxides by flotation, though 
some experimental successes have been obtained by chem- 
ically coating the oxide particles with a film of sulphide 
and then treating the coated oxide particles l)y flotation. 
An important feature of the develo]nnent of the year 
has been the indication that flotation is going to replace 
the cyanide process to a great extent. In those mines 
that produce silver principally in the form of sulphide, 
particularly when ores are of a rather low grade, it seems 
almost certain that a process of flotation concentration 
will be cheaper and more easily ap])lied than tlie cyanide 
process. The liberation of sulphide particles for action 
by a flotation proiess makes fine grinding a necessity, 
but in fact all-sliming has been a standard process for 
so long that grinding problems have been essentially 
solved. The recovery of the sulphide from the pulp. 



nage and able to keep it up continuously, some form of 
smelting may possibly be introduced. The way is by no 
means clear as yet, but the problem is going to come 
up. 

In the cyaiiiding of the concentrates obtained by flota- 
tion, it will be a problem to get rid of the oil contained 
in the sulphides. Filtration will not remove it all, and 
roasting the concentrates will bequeath an uncomfortable 
larbonaceous residue that will give trouble by precipi- 
tating the gold and silver from solutions. Perhaps some 
form of washing it out with an alcohol, which will remove 
the heavy oil and itself be removed by water, or by 
saponifying and washing out with some alkaline solution, 
will present a way out of the difficulty. 

While the principal companies owning flotation patents 
are ofl'ering especially designed machines for its applica- 
tion, it is a notable fact that many of the operating plants 




COMI'ANIKS CSl.VC Ol: K.\l'i:i;I.MENTI.Ni; WITH FLOTATION IN' THE U.NITED STATi:- 
Owing to the large amount of experimentation now goinK on in this country with the flotation process, new companies 
are daily being added to this list or are changing their status from experimenters to users. While the map is therefore onl 
of ephemeral value, it serves to indicate the great awakening that has taken place in the United States during the last twu 
or three years with respect to flotation 



then, is the stage in whidi flotalioii will ])robably be 
cheaper, quicker and easier than treatment by cyanide. 

The treatment of silver sulphides l)y flotation is going 
to introduce another pn)bk'ni, however, and that is the 
iiandling of tiie comentrates themselves. Perhaps in 
the great majority of cases the high grade of the con- 
centrates thus recovered will allow them to be shijjped 
for considerable distances witiiont running up the cost 
per ton of crude ore to an abnormal jwint. There will 
1)6 cases, however, where it will be impossible to .ship the 
concentrates, and their tn-atment will have to be at- 
ti'inpted on the ground. Here cyanidation will ])robably 
1k' ait|)lied at the smaller plants, whereas in the ])lants 
i)ig enough to make an output of anv ( (nisideijilili' trm- 



iiavf designed macliiiies that si'eiii to suit their particular 
conditions better. It is a remarkable fiut that a very 
large proportion of tlie mills using flotation at all are 
using machines of their own design, .sometimes in com- 
Ijinatioii with those of the standard manufacturers and 
sometimes without them. The records of the Patent 
Oflice show a continuous stream of patents issued for 
flotation machines. 

Successive cleaning of concentrates made by flotation 
is being practiced by nearly all the plants. Tlie number 
of cleanings, however, varies immensely, some plants 
cleaning the concentrates but once, while others clean 
with as many as si.\ dilTerent operations. The flotation 
concentrates, once formed, have to be cleaned in order 



.lamiarv 8, 1910 



THE ];x(;[xi:ekixc; d- mixing jourxal 



99 



to raise their grade, but iu combiuatioii with the grade- 
raising process it has been found possible to select the 
particular sulphides to be floated and the ones to be left 
in suspension. By this means it seems possible to separate 
the different sulphides where an ore is complex and con- 
tains several difl:erent metals. Thus it is possible to make 
a large increase in the profits of the process, since many 
of the sulphide combinations are worth less than when 
they are sold separately. A well-known example is the 
combination of zinc and lead sulphides, which is un- 
desired by the smelting plants and brings a considerably 
lower price than the lead and zinc when separated and 
sold with a view to the value of the one metal contained. 

Effect of Varying Details 

The effect of varying conditions upon flotation has 
been made the subject of considerable study, and some 
information has been made public. The effect of varia- 
tions of dilution, the amount and kind of ore used, 
temperature at which the operation is carried on, etc., 
all appear to have some effect. As to dilution, it seems 
that when a constant specific gravity of pulp is luain- 
tained, it really does not make much difference what 
the exact figure is. The point is that the amount of oil 
used and the rate of flotation and skimming, etc., have 
been based on a certain dilution and that dilution must 
l)e maintained or the other factors will not be applicable. 
Undoubtedly, in some cases a thicker pulp may be main- 
tained than in others, but in general it may be said 
that a prett}' fair rate of dilution ought to exist in order 
to allow the free separation of the mineral grains from 
the gangue, giving the former a chance to float without 
any great amount of interference from the gangue 
particles. 

The kind of oil used will probably depend largely upon 
the availability for local use of any particular oil. Of 
course it is true that some oils provide good froths, while 
others do not. Coal tars, for example, do not froth 
readily, but make good carrying agents for the minerals. 
Pine oils make common frothing agents. The cheaper 
coal tar, with a small proportion of the more expensive 
pine oil, will often make a good flotation combination. 
In Australia the eucalyptus oils are readily obtainable 
and have formed the frothing element in most of the 
oils used there. However, a great variety of oils may be 
used, among which may be mentioned jiine oils, creosote, 
eucaly])tus oils, pyroligneous. Texas crude, coal tar, oleic, 
stearic, and in fact all kinds of vcuetal)le and mineral 
oils. 

Al'I'LIl ATIOX.S OF THE TUUCESS 

In the application of the process, the Australian fields 
I'.ave led the way and still continue to increase the 
a])|ili(ations. Most of the Australian mines have taken 
it up, the latest being the Wallaroo & Moonta, which has 
l)een making extensive experiments on the process. In 
the United States the process has been applied iu almost 
every district, except in those where the mineral recovered 
is not of sufficient value to be handled by the process. 
The Goldfield Consolidated is trying out the process and 
has installed an experimental plant on rather a large 
scale, (ioldfield will re-treat its large tailings ]iile and 
will probably make use of flotation in that connection. 
Some experiments have been madi> on the process at 
Ton()i)ah. but as yet no definite conclusions, if reached, 
liave been made public. In the Co'ur dWlcnc distri<t. 



the process has worked practically a revolution in metal- 
lurgy, becoming an important addition to all the mills 
in operation there. In southeast Missouri it has been 
widely adopted, and the applications are spreading every 
day. In the Joplin district there is but one recorded ap- 
plication of the process. The Cripple Creek district has 
been trying it out during the year on the sulpho-telluride 
ores of the district, and many authorities believe it will 
lead to the rejuvenation of the district and an immense in- 
crease in the gold production of the old camp. Mo.«t of 
the Colorado mills have been trying it out, and with 
considerable success. The Arizona porphyry copper mills 
are using it, and in some of them an additional saving 
of 15% has been made. It is used also in mills of the 
Butte district of Montana. The Butte & Superior has 
long been a leader in flotation and continues to use 
the process successfully. The accompanying map will 
give a good idea of the applications of the flotation at 
the present time. It shows that there is hardly a metal- 
mining section of the country where flotation has not be- 
come a leading factor of interest and a subject of careful 
and detailed experimentation. 

The year has certainly been a notable one for flotation, 
but it is also true that if publicity be given to the 
details of the process, the coming year will be even more 
remarkable. It is to be hoped that open discussion will 
l)e promoted and that the theoretical basis of the process 
will be more or less fixed. 

The Theory of the Process 

The theory of the process is one of the points that 
has been uncertain for some time, and wdiile the year 
lias brought forth several descriptions and tentatives bases 
for a theorj-, none of them has been sufficiently elaborated 
to prove its truth. The surface-tension theory, which 
accounts for the use of oil through the fact that it 
reduces the surface tension of the liquid and allows 
bvibbles of a more permanent character to be formed, 
while explaining the phenomena partly, will by no means 
do as a complete ex])lanation. In the article by J. M. 
Callow, which has already been mentioned here, a review 
of the theories of flotation is presented, together with 
some additional suggestions for a more stable working 
basis. The most important new idea advanced is that there 
IS a parallelism between certain electrostatic character- 
istics and the flotation properties of ore. It has been 
noted that small anunints of some colloidal impurities 
interfere with flotation, and in classifying these the in- 
jurious ones will be found to come usually under the 
liead of electronegative colloids, while electropositive 
(iilloids are not harmful. Thus the theory is advanced 
tliat electrostatic conditions have a great deal to do with 
the flotation of the mineral. There is very little doubt 
of the truth of this assertion, since it is possible to measure 
the difference in electric charge of the various kinds of 
jiarticles in the pulp by nu'ans of a delicate«galvauometer. 
The theory, however, is by no means clear, and a lot of 
work will have to bo done to segregate the actual basic 
iV.ct. The charges upon the solid particles iii the pulp 
are in all jnobability ionic charges, and the reason for 
their presciue and for their acting in the way they do 
will have to be clearly explained. There is no doubt that 
the apjiliiation of a proper theory will be of immense 
assistance in forecasting the success or failure of flotation 
as aiii)lieil to any jtarticidar ore or character of rock. 



100 



THE EXGIXEERIXG c- MIXIXG JOURXAL 



Vol. 101, No. 2 




Y Robert E. Cranston* 



There was more activity in the dredging industry in 
UU.5 than in 1911. More new dredges were built during 
the year, and at least as many old dredges were re- 
built. There was also a marked increase in the nimiber 
of contracts let, and 1916 should show a greater number 
of new dredges put in commission than for several years 
past. The improvements in design follow the general 
tendencies of the last few years. All-manganese-steel buck- 
ets, round manganese-steel lower tumblers, steel hulls and 
increased table areas are all becoming standard practice, 
particularly in California, and there have been several 
special designs originated to take care of particular local 
conditions, such as the bypassing of clay overburden, re- 
soiling, the use of jigs to replace tables and the grinding 
of jig concentrates in order to save a larger percentage 
of fine and coated gold. The improved financial condi- 
tion of the country has had a good deal to do with the in- 
creased activity in the dredging business. 

Alaska and the Yukon have at least held their own. Si- 
beria is still in about the same condition as last year. At 
least two new dredges were built in Colombia, but I have 
heard of no other installations being made in South 
America, although several large areas are being tested on 
the west coast and in Central America. Perhaps the most 
active of any of the outside fields is the Philippines. 
There are six dredges now operating there and several 
more being built. The reports indicate that the profits 
are satisfactory. It is possible that there may be an 
extensive field developed in Chosen. A new dredge has 
recently been ordered for that field, and a number of areas 
look promising. The Breckenridge dredges continue to 
be productive, and Montana, Idaho, Oregon and Xevada 
have eacli one or more dredges operating successfully. 

Dredging Conditions in California 

In March the Oro ^Vater, Light and Power Co. com- 
I)k'ted its 6-cu.ft. bucket dredge on the Mokehmine River 
near Clements, Calaveras County. Part of the macliin- 
erv for this dredge was taken from the old Empire dredge 
at Oroville, and the new portion was built at tiie Xew 
York Machine Shop, at Oroville. It is rumored that this 
company contemplates extending its operations in Cala- 
veras County, having made arrangements for additional 
mining rights on the Mokelumne River, near Comanche. 

The old Ilorsetown dredge, which operated near Red- 
ding, has l)een moved to Gas Point, on Cottonwood 
Creek, Shasta County. Cottages, etc., have been built, 
and tlie new to\<'n is called Smith Center. 

James Hawke has Iniilt a clamshell-type dry-land 
dredge on Deer Creek, 2 mi. west of Grass Valley. The 
gravel is dug by the clamshell bucket, screened, dropped 
into sluices and the oversize disposed of by means of a 
belt conveyor. The dredge is driven by steam, wood be- 
ing used as fuel. The property extends about 2,300 ft. 
along the creek, snd it is expected that 500 cu.yd. will be 
handled per day. 

The Xew Xo. 4 Xatomas dredge, now being rebuilt 
after a design that will make possible replacing the 



•Mining engineer. 437 Holbrook Building, San Francisco. 
Calif. 



ground with soil on top, is p"''haps the most interesting 
of any of the 191.5 dredges. This boat has two short stack- 
ers, one at each corner of the stern. The fine material 
is carried aft a considerable distance beyond the point 
where the stackers dump and is discharged back of and 
above this coarse material. Jigs will replace the lower 
part of the gold-saving tables, and the concentrates 
from the jigs will be treated in a Hardinge mill. The 
operation of this dredge will be watched with a great deal 
of interest. 

The Union Iron Works is building an all-steel 16-cu.ft. 
bucket dredge for the Marysville Dredging Co.'s property 
on the Yuba River. This will make the fifth dredge to be 
built on this property. It will be of standard California 
type and similar to the Yuba Consolidated's Xo. 14. 
The Yuba Construction Co. now has under construction 
for the Yuba Consolidated Co. an all-steel 16-cu.ft. dredge 
designed to dig 80 ft. below the water level, and it is 
said that this will be the most powerful and largest gold 
dredge that has yet been constructed. The Union Iron 
Works is rebuilding two 5-cu.ft. dredges for Lawrence 
Gardella. One of these will be installed near Lincoln, 
Calif., and the other will be put on the Salzer Ranch, 4 
mi. south of Redding. 

Besides the dredges that have been built or are building, 
there are several other California properties on which 
it is reported that dredges are being or will be built, but 
concerning which there is no definite knowledge. A list 
of these is given. 

Yuba River and Marysville Conditions 

The Mountain Meadows Dredging Co. expects to install 
a dredge near Greenwood, Plumas County. Another 
reported installation to be made in Plumas County is 
at English Bar, on the Middle Feather River. The Gug- 
genheim p]x])loration Co. is reported to have contracted 
for a large dredge to operate on its recently acquired 
jiropeily on the Yuba River above the Yuba Consolidated 
ground. Clear Creek, east of Redding, has been tested 
by steam drills and it is reported that a dredge is to be 
installed. It is expected that the Valdor Gold Mining 
Co.'s property at Junction City, Trinity County, will be 
ei]uipped with a medium- or small-sized dredge during 
the coming year, and Dr. James JI. Mclntire expects to in- 
stall a suutll one at Bulls Bar, south of Copley, on the Sac- 
ramento River. 

Consideral)le prospecting has been carried on in Califor- 
nia during 1915, and among the areas tested may be 
mentioned tiie district in the vicinity of Carville and 
Trinity Center, on the Trinity River, and the Igo district, 
near Redding, Shasta County, both of these by the Tono- 
pah Mining Co. The Marysville Dredging Co. tested 
the placers at .Junction City, Trinity County, and the 
Guggenheim Exploration Co. has been examining tin- 
Yuba River above the Yuba Consolidated ground. 

The only serious mishap reported during the year in 
California was the burning of the Viloro Syndicate dredge 
Xo. 2, at Orovillr. on Oct. 19. The fire was caused by 
a short-circuit in the transformers, and the dredge is 
said to be a total loss. The United States Geological Sur- 



January 8, I'.UG 



THE ENOTNEKRINCJ 6- MINING JOUIJXAL 



101 



vey reports I'or ]i)14 sliow that OO (Ircdtrcs jii-oduced $7,- 
783,39-t, which is 86% of the total gohl jn-oduf'tion of 
the state. The dredge production was $306,900 less than 
in 1913. The total dredge production from 1898 to 1914 
inclusive has been •$71,307,766. The figures for 1915 are 
not yet availal)le. 

The Feather River, Yuba Eiver and American River 
districts still produce by far the greatest part of the 
gold won in California by dredging and there has been 
little apparent change in conditions. They are, how- 
over, inevitably approaching the time when there will be 
a marked decrease in production. The other smaller dis- 
tricts continue about the same as in 1914, with some de- 
creases which, however, are made up by other small new 
areas being n])enc<l up. 

OiiKiiox, f'oL(jKAi)o -\xii Oriiici: Statks 

The Powder li'ivcv Dredging Co. has had a new dredge 
constructed during the year for its property near Sunip- 
ter, Baker County, Ore. This dredge was built by the 
Yuba Construction Co. and is a duplicate of its other 
boat. It is called Powder River No. 2, is electrically driven 
and is equipped with 7-eu.ft. buckets and designed for 
hard digging. Owners of the old Isabella dredge, which 
operated at Jenny Lind, Calif., are reported to be about 
to install a dredge in the Baker City district, Oregon. 

On Oct. 9 a dredge went into commission on the Deri'v 
Ranch property, on the upper Arkansas River, in Colorado, 
below the mouth of the famous California Gulch of the 
Leadville district. The property has been thoroughly 
tested and 12.'j acres of land proven out of a total of 1,500 
acres in the property. The New York Engineering Co. 
lias rebuilt for this ground an old dredge using 5i/2-cu.ft- 
all-manganese-steel buckets, electric drive and wood hull, 
107 ft. long and 42 ft. wide. The operating company 
is called the Derry Ranch Gold Dredging Co. The prop- 
erty of the Tin Cup Gold Dredging Co., of Colorado, 
was sold for $5,000 on Sept. 2, by the United States 
Court of Bankruptcy, and is now lying idle. 

At Breckenridge, Colo., the Tonopah Placers Co.'s 
dredge No. 1 is operating below the town on the Blue 
River. No. 2 is operating well up the Swan River, and 
No. 3 is in lower French Gulch. The French Gulch 
Dredging Co.'s dredge operated on upper French Gulch. 
It is reported that a dredge is to be installed on the 
Oro Grande placer near Dillon, Summit County, Colo., 
and the old placers near Alma are being tested with a view 
of determining their value as dredging areas. In Idaho 
the American Placer Mining Co. installed a 3i/^-cu.ft. 
steam-driven dredge on the Orofino River 7 mi. below 
Pierce City. The company owns 100 acres of promising 
dredging land. 

The Boston- Idaho Dredging Co., operating on the 
Feather River, near Featherville, Elmore County, Idaho, 
has worked only on a small scale this season, owing to 
lack of water. There are reported dredging activities 
in Montana, Nevada and Georgia, but the information 
available at this time is not reliable. 

Alaska, thic Piiilippixks and Othhr Countries 

The reports of new installations for Alaska are some- 
what conflicting and, as I have noticed in the past, not 
always to be relied upon. However, I give a list, compiled 
from the technical press, which is probably fairly accu- 
rate although not complete. The new Berry dredge 



was moved from Circle City to Mastadon Creek during 
the early part of the year. This work was done under 
the direction of the Union Construction Co. The Kouga- 
rok iJredging Co. placed a dredge on Iron Creek, near 
Cordova, the machinery being freighted in over the winter 
trails. The Cache Creek Dredging Co. is preparing to 
freight in during the coming winter a new 7-cu.ft. dredge, 
which is to operate in the Yentna district back of Cooks In- 
let. This will be the first dredge in this district. The Yukon 
Gold Co., of Dawson, has bought 31^ mi. of placer ground 
on Greenstone Creek in the Ruby Camp, and it is reported 
that it will install a 3i/^-cu.ft. steam-driven dredge in 
the near future. 

Two dredges were built by the American Dredge Build- 
ing and Construction Co., of Seattle. One on Si.\ Mile 
Creek, near Sunrise, southwestern Alaska, for Barnes & 
Herron, was designed to dig 20 ft. below water level. The 
other dredge was built and installed on Buck Creek, 
near York, Alaska, for the American Tin Dredging Co. 
It is designed to dig 12 ft. below water and to recover 
gold and tin. Both dredges have 2-cu.ft. buckets and 
80-hp. gasoline engines. 

The Alaska Exploration Co., which has been operating 
a Sy^-cvL.it dredge on Fairbanks Creek for several years, 
is considering the installation of a large steam shovel to 
operate some newly acquired property on a tributary of 
the upper Goldstream. It is reported that the Anaconda 
group of placers near Fairbanks will install a dredge ne.xt 
year. A. J. Jarmouth and associates, of New York, 
will install a 5-cu.ft. Bucyrus dredge on Cripple Creek, 
12 mi. from Nome. The machinery is being shipped north 
this fall and will be installed in the spring. 

Prospectixg IX Alaska 

There has been much prospecting going on in Alaska 
and the Yukon during the summer. Among other prop- 
erties examined were the Timmons, in the Tatlanika 
district, out from Fairbanks, the Ivenai River country, 
Yaldez Creek, the new Talovana district, the Yakataga 
Beach placers and many more. There were 42 dredges 
leported operating on the Seward Peninsula. Many of 
these, however, were very small aifairs, and the production 
was light. 

No. 2 Canadian-Ivlondyke dredge, which overturned in 
the autumn of 1914, was righted and dry-docked on July 
20, but owing to an accident on July 23 in which one 
man was killed and 3 injured, the dredge could not go 
into commission as soon as expected. It was restarted on 
Sept. 21, and the cleanup will be about 65,000 oz. The 
other three dredges of this company started work early 
in the season and probably got in a good season's work. 
Serious accidents to Riley & Marston's dredge, operating 
on Alter Creek in the Iditarod district, compelled this 
dredge to close down much earlier than was expected, 
but the Bagley scraper excavating the dry portion of this 
placer along the stream is reported to have been success- 
fully used during the season. 

Most of the dredging in the Philippines has been in 
the Paracale district, Province of Ambos Cauuirines, Is- 
land of TiU/Con. Early in 1913 four dredges were operat- 
ing in this field. In April, 1915, six dredges were at 
work and four more ordered or being constructed. Three 
of these are being built by Philippine Dredging, Ltd. 
One has 8i/4-cu.ft. buckets and a wooden hull, one has 
(i-cu.l't. buckets, and the third has 9-cu.ft. buckets, is all 



103 



THE EXGIXE?]RIXG d- MIXIXG JOURXAL 



Vol. 101, No. 2 



steel and is being built in Australia. The otlier dredge 
under construction is Ijeing i)uilt by the Xew York En- 
gineering Co. for the Mambulao Placer Co. This dredge 
will operate in salt water in the bay of ilambnlao, Island 
of Luzon, and has several unique features. The hull has 
more the lines of a ship than an ordinary dredge. It 
has a clay chute to bypass the barren overlnirden. The 
machinery is electrically driven by means of current gen- 
erated on the dredge by a steam turbo-generator set. 
The dredge is designed to dig o.i ft. below water line. 
The hull is 136x4<.\10 ft. and is built of wood protected 
by ship-sheathing felt to prevent boring by insects. The 
buckets are of one-piece manganese steel, the lips being 
cast integral with the hood and base. 

Besides the new installations in the Paracale district. 
new placer macJiinery is being installed in the districts 
of Tayabas. Rizal and Surigao. The reported production 
of gold in the Philippines for 191-1 was $1,203.4:33. Xear- 
ly one-half of this came from dredges, and tlie 39% gain 
in production over 1913 was mainly due to this source. 



In Soutli America two new dredges were built, one of 
which was for the Xechi Mines (Colombia). Ltd., near 
Zaragoza. This property is controlled by the Oroville 
Dredging Co., Ltd., and is to be operated in conjunction 
with the Pato dredge. The Xechi dredge was ordered 
in England from Eraser & Chalmers. It has 7%-cu.ft. 
close-connected buckets. The hull arrived in Colombia 
in Xovember. 1H14, and the dredge was put in commis- 
sion in September, 1915. The Anglo-Colombian Develop- 
ment Co. started its 8-cu.ft. dredge on July 20, in the 
Condoto River, in western Colombia. 

In Xovemlier, 191.5, the Chiksan Mining Co. placed 
an order with the Xew York Engineering Co. for a 101^- 
cu.ft. dredge for its property in Chosen. This dredge 
will lie designed with large factors of safety and will be 
of the most uptodate California type. It will be provided 
with a bypass for taking care of the clay and resoiling 
the ground dredged. The hull will be of steel, 110x.50xlO 
ft., and the dredge is designed to dig 2-5 ft. below water 
line and to carry a l.'i-ft. bank. 



.comioiiMC 



,Y in 



By Adolph Knopf* 



The origin of the zinc and lead deposits of the Joplin 
region, which includes parts of Missouri, Kansas and 
Oklahoma, is exhaustively considered by C. E. Sieben- 
thal (U. S. Geol. Surv.", Bull. 606). His theory, in 
brief, is that the ore deposits were segregated from zinc 
and lead sulphides originally disseminated in the Cam- 
brian and Ordovician strata, from which they were dis- 
solved by alkaline-saline waters and deposited on the 
upward limb of an artesian circulation. The orebodies 
occur in a belt lying on the flank of the structural dome 
known as the Ozark uplift. As a consequence of this 
uplift the stratified rocks were warped into the shape of 
a low, broad dome whose flanks dip away from the center 
at the rate of 6.6 ft. to the mile. 

After tlie impervious rocks had been removed by ero- 
sion from the crest of the dome, an artesian circulation 
was developed in the lower-lying pervious rocks. The 
underground waters flowed down the sides of this dome 
in the Cambrian, Ordovician and overlying rocks; and as 
they were charged with salts of the alkali metals, with 
hydrogen sulphide and with carbon dioxide, they were 
al)le to extract the zinc and lead from the strata through 
which they moved. As tliese waters rose to the surface 
along the channels of ascent of 'the artesian circulation, 
which were situated along the inner edge of the over- 
lying impervious shale formation encircling the dome, 
the carbon dioxide escajied and the dissolved zinc and 
lead were precipitated as sulphides by the hydrogen sul- 
pliide. 

Action of Colo Autesi.ax Water.s 

The ore-forming waters arc tiiought to have been sim- 
iliar to waters now rising under similar conditions in 
the surrounding region. The most important evidence 
in support of this is that tlic sediments that accumulate 
in reservoirs supplied by wells penetrating the Ordo- 
vician and Cambrian rocks contain considerable quanti- 

•Economlc geologist, United States Geological Survey, 
Washington. D. C. 



ties of zinc, lead and iron sulphides, so that it is clear 
that the waters of the Ozark artesian circulation are 
now dissolving tlie metals dispersed through the Cam- 
brian and Ordovician strata and are bringing them to 
the surface. 

T\'ithout summarizing the large amount of evidence 
that Sieljenthal has marshaled in support of his con- 
tentions, it can be said that he has practically demon- 
strated that cold artesian waters have deposited orebodies 
of great commercial importance, Joplin being the most 
productive zinc district in the United States. Accord- 
ing to current thought, most orebodies have been depos- 
ited from hot solutions given off by cooling igneous 
rocks (and there have not been wanting those who have 
suggested such an origin for the Joplin deposits, though 
no one who has studied them in detail has supported 
such an explanation, and in view of the prevailing trend 
of thought concerning the genesis of ore deposits, tlii.- 
demonstration of the cflicacy of cold meteoric water a- 
an ore-forming agency consequently gives to the report 
an additional significance. 

Tlie opposite pole of geologic thought is seen in a paper 
by B. S. Butler, on the relation of the ore deposits of 
Utah to different types of intrusive bodies of igneous 
rocks ("Econ. Geol." pp. 101-122). The ore deposits of 
Utah are generally associated with igne<nis rocks, and 
the author assumes as not requiring ])roof that tlie ore- 
bodies and igneous rocks are genetically related in the 
sense that both have sprung from the same magmas. The 
value of tlie metalliferous output to tlie close of 191.'' 
exceeds .${)3r),000,000. Of tliis sum less tlian l/o% ha< 
come from ore deposits associated witli laccoliths or with 
"medially truncated" stocks; and of the $111 ,000,000 
dividends known to have been distriinited by metal-min- 
ing companies, all has come from deposits occurring in 
or near "apically truncated" stocks; in other words, with 
igneous intrusions whose tops have been but slightly un- 
covered bv erosion. 



Jamiarj- 8, 1916 



thp: exgixeering & mining journal 



100 



The explanation advanced for the remarkable relations 
thus strikinglj' pointed out is that the mapniatic emana- 
tions, which are the ore-formin<r arrencies, tend to col- 
lect in the tops of the stocks, and wlien the io;neous rock 
has cooled sufficiently to fracture, to esca])e through 
these channels and deposit their metallic burden; in the 
"medially truncated" stocks and more deeply uncovered 
igneous masses, erosion has progressed deep enough to 
have removed the roots of the veins. If this explanation 
is correct, the actual disappearance of veins in depth 
ought to be observable in some of the stocks. This is 
thought to be true of the Cactus lode in the San Fran- 
cisco stock. At the surface the lode is a mineralized 
breccia zone over 100 ft. wide and traceable along the 
strike for several thousand feet. In depth the breccia 
zone tapers rapidly, so that at 900 ft., it is only a few 
feet wide and the breeciation is much diminislied. As 
might be expected of such orebody, the tap root of a 
great lode, the earliest formed minerals occurring in it 
are of the kind that prove it to have been formed at high 
temperature. 

The extensive deposit at ileggen, Westphalia, consist- 
ing of barite and iron sulphide, is thought by A. Bergeat 
("Neues Jahrb. Beil. Band" 39, pp. 1-63) to be a stratum 
formed in the Devonian sea. The iron sulphide is chiefly 
niarcasite in radial, rh\'thraically banded spherules, which 
show shrinkage cracking from the decrease in volume 
during the passage from the colloidal to the crystalline 
state; and the barite, forming the largest known deposit 
of this substance, generally lies above the sulphide, the 
m-o together forming a lied ranging in thickness from -5 
to 20 ft. The deposit is commonly explained as a metaso- 
matic replacement of limestone, followed by replacement 
of the barite by pyrite. Bergeat, however, regards it 
as of sedimentary origin, although its deposition in the 
Devonian sea was tiltimately conditioned by the volcanic 
activity of that time. 

Work ox Gold axd Platixum 
The most remarkable of liigh-grade gold ore yet found 
in the West, that at National, Nev., is described by W. 
Lindgren (U. 8. Geol. Surv., Btill. 601). This shoot 
produced nearly $4,000,000 in ore averaging $20 per 
lb. Only one-sixtieth part of the quartz in the shoot 
was rich ore. The shoot is an abnormal phase of the 
argentiferous qtiartz-stibnite veins of the district, none 
of which, however, has attained notable commercial im- 
portance. It is shown to be of primary origin ; since 
its original deposition there has been no redistribution 
of gold or silver by the action of descending surface 
waters. Beyond this, however, the explanation of the 
extreme localization of gold in this shoot remains an 
enigma. 

Platinum and palladium have recently been recognized 
in the gold ore of the Boss mine, in southern Nevada 
(U. S. Geol. Surv. Bull. 620-A). The deposit has been 
known for 30 years: attempts had been made to work 
it for copper in the '90s, but only in 1914. while being 
sampled for gold, was its platinum and palladium con- 
tent discovered. The ore is a fine-grained gray to black 
quartz, and is not only peculiarly worthless looking, but 
is also material which it would have been considered 
wlioUy improbable to contain platinum or palladium. 
Tlie precious metals are especially associated with a green- 
ish-yellow ocher. hicallv known a^; taK-. which carries gold, 



platinum and palladium to the extent of several hun- 
dred ounces to the ton. The ocher, when immersed in 
highly refractive oils and examined under the microscope, 
is found to consist largely of plumbojarosite, a basic .sul- 
phate of lead and iron, and subordinately of beaverite, 
a basic sidphate of copper, lead and iron. Both minerals 
are crjstallized in perfect hexagonal plates averaging less 
than one-thousandth of an inch in diameter. It is to 
this CT^-stalline development that they owe their smooth 
talc-like quality. The lode is a replacement of Carbon- 
iferous dolomite along a series of vertical fractures and 
is probably related genetically to the quartz monzonite 
porphyry intrusions that penetrate the rocks of the re- 
gion. The geologic features of the deposit run counter 
to a number of long-cherished generalizations concern- 
ing the geology of platinum. Production of platinum 
and palladium began late in 1914. and a yield of 110 oz. 
of platinum and 168 oz. of palladium was reported, the 
largest production of these metals as yet from a lode 
mine. 

Developmexts IX THE Geologt of Irox 

The iron-ore deposit of Kirimavaara in northern Swed- 
en is the largest body of high-grade iron ore now being 
worked anwhere. It is 10,000 ft. long, averages 2.50 
ft. in thickness and carries 66% metallic iron. Those 
who have studied this deposit in recent years agree that 
it is of igneous origin. As to the kind of igneous mass 
it represents, however, opinions are still at variance, some 
holding that it is a dike and others, a great otitflow of 
lava which was covered soon after its eruption by the 
quartz-porphyry that now forms the hanging wall of 
the orebody. 

In a recent paper, Daly ("Origin of the Iron Ores at 
Kiruna," p. 31 ) advances a new explanation. He believes 
that the syenite-porphyry, which forms the foot wall of 
the orebody. and the hanging-wall quartz-porphyry to- 
gether make up a double or composite laccolith. The 
quartz-porphyry magma was injected shortly after the 
consolidation of the underlying syenite-porphyry. After 
it came into place, magnetite began to segregate from 
the still molten rock, collecting into irregidar nodides. 
Under the pull of gravity these hea\'y nodides of mag- 
netite sank to the bottom of the quartz-porphyry mass, 
there to coalesce and form the great mass of iron ore 
now being worked. In the late stages of this process many 
of the magnetite nodules were frozen in at higher levels 
of the porphyry and now afford clues to the mechanism 
by which the orebody originated. That the foot-waU 
syenite-porphyry was still hot when the quartz-porphyry 
was injected, thus retarding the rate of coolbig of the 
younger intrusion, was probalily an important factor fav- 
oring the voluminous .reparation of iron ore. 

Coal axd Oil REsorBCES 

'"Coal Fields and Coal Resources of Canada" (Geol. 
Surv. Canada. !Mem. 59) by D. B. Dowling is a reprint, 
with some additions, from '"The Coal Resources of the 
World," a volume prepared under the auspices of the 
Twelfth International Geological Congress, and gives in 
more available form the data on Canada. 

Certain important relations in origin between coal and 
petroleum are pointed otit by David White ("Wash. Acad. 
Sci. Journ.." Yol. o. pp. 189-212). As shown by a ctm- 
sideration of the data of the world's oil fields, the petro- 



104 



THE EXGIXEERIKG & MIXIXG JOURXAL 



Vol. 101, No. 2 



leums exliibit regional differences that vary correspond- 
ingly with the rank of the coals in the same fields. In 
general, the oils of lowest rank occur in the regions and 
formations in which tlie carbonaceous deposits are least 
altered. In proportion to the amount of draamic dis- 
turbance to wliich a region has been subjected, the hydro- 
gen is concentrated in the distillates and the carbon in 
the residual coals or carbonaceous shales. Xo commer- 
cial oil pool has ever been found in regions in which the 
elimination of the gaseous constituents of the coal has 
proceeded beyond 70% of fixed carbon. This relation ap- 
pears, therefore, to furnish a criterion of broad appli- 
cability in the search for oil : it shows at once that large 
areas of sedimentary strata can be excluded as territory 
in which it would be futile to prospect for oil and directs 
attention to areas in which search may be more profit- 
ably prosecuted. 

Anderson and Pack describe the oil-bearing strata and 
associated formations of the west horder of the San 
Joaquin Talley north of Coalinga, Calif. (TJ. S. Geol. 
Surv., Bull. 603, p. 220). The oil is shown, hy what 
practically amounts to proof, to have originated from 
two distinct shale formations widely separated in age, 
the older being Cretaceous and the younger Oligocene. 
These shales are largely composed of the siliceous re- 
mains of microscopic aquatic plants — diatoms — which 
are mingled with a certain proportion of the remains of 
the microscopic animals termed foraminifera. The older 
shales gave rise to a parafiin-bearing oil. and the yf)unger 
shales to an asphaltic oil. The sources of the oil being 
known and the structural relations of the various forma- 
tions having been determined, the practical questions that 
arise concerning the extension of the oil-bearing terri- 
tory can be discussed with considerable certainty. 

The year's demand for selenium has been much cur- 
tailed through absence of buying orders from the railroad 
for signal lamps and no possibility of shipments to Ger- 
many and Austria, although some metal was shipped 
from Baltimore to Rotterdam. The copper refineries 
have decreased production and even offer direct to con- 
sumers in small parcels. Tlie price has ranged from $2 
to $5 per lb. 

Both the United States :Metals Refining Co. and the 
Raritan Copper Works had interesting exliiblts at the 
Chemical Exposition in Xew York, the Raritan bars 
being especially noteworthy for the large masses cast in 
vitreous fonn. Methods of production have been changed 
by some of the leading producers, the slags from the 
slimes furnaces being used rather than tlie flue dusts. It 
is impossible to estimate the production. 

M oly Sad ec^tumm 

In the early part of 1915 the inquiry for molybdenum 
products dropped to practically nothing, the sudden de- 
mand in the last quarter of 1914 proving to be but a 
temporary interest. That demand, however, caused 
molybdenum to be prospected for as never before, with 
the natural result that molybdenum ores are offered ver}- 
freely, with practically no demand at the present time. 

The Primos Chemical Co. slnit down its Empire oper- 
ations in Colorado on Sept. 1, as it had such a large 



stock of molybdenum ores at its works in Pennsylvania 
that it figured it would take a long time to absorb at 
the present rate of consumption. Efforts made to broaden 
the use of molybdenum at least to what it was from 1900 
to 1905 have thus far failed, and what the future will 
bring depends a good deal on experiments still going on. 
At the present time there is no demand for molyb- 
denum ores amounting to any tonnage, and low-grade 
ores such as were bought in 1914 are not taken now, 
there being so large a supply of very high-grade ores in 
the market. 



St 



[isain^ 



The following lists of the directors of state geological 
surveys and of the chiefs of state mine-inspection bureaus, 
constitute a convenient reference : 

STATE MINE INSPECTORS, COMMISSIONERS, ETC. 
State Name and Address 

Alabanta.. . C. H. Nesbit. Chief Mine Inspector. Birmingham. 

Alaska Sunmer S. Smith, Mine Inspector, Juneau. 

.\rizona C. H. Bolin. State Mine Inspector. Phoenix. 

Charles F. Willis, Director. State liureau of Mine-s. 

.\rkansas John H. Page, Commissioner. Bureau of Mines. Manufactures 

and -\griculture. Little Rock; John T. Fuller. State Mineralo- 

Eist: Tom Shaw. State Mme Inspector, Midland. 

California F. McN. Hamilton, .State Mineralogist, San Francisco. 

Colorado Fred Carroll. Commissioner. 

James Dalrymple. State Inspector of Coal Mine®, Denver. 

Idaho R.N. Bell. State Mine Inspector. Boise. 

Indiana Michael Sccllard, Deputy Inspector of Mines. Indianapolis. 

Iowa E. M. Gray, Pres., State Mining Board, Des ^loincs. 

Kansas John Pellegrino, Chief Mine Inspector. Pittsburg. 

Kentucky C. J. Norwood, Chief Inspector of Mines, Lexington. 

Marj'land William Walters. State Mine Inspector, Midland. 

Minnesota F. A. Wildes, ,State Mine Inspector, Hibbing. 

Missouri George Bartholomaeus. Sect.. Bureau of ^Iines and Mines In- 
spection. Jefferson City. 

George Hill. Chief Mine Inspector, Bevier. 

Montana W. B. Orem, State Mine Inspector, Helena. 

Nevada A. J. Stinson, State Mine Inspector, Carson City. 

New Mexico. Rees H. Beddow, State Mine Inspector, Gallup. 

New York W. W. Jones. State Mine Inspector. Albany. 

North Dakota.. James W. Bliss, State Engineer, Bismarck. 

Ohio J. M. Roan, Chief Deputy, Di\'ision of Mines, Columbus. 

Oklahoma Ed. Boyle. Chief Inspector. McAlester. 

Oregon H. M. Parks, Director. Bureau of Mines. Co^^■aUis. 

Pennsylvania. . James Roderick. Chief, Department of Mines. Harrisburg. 
South Dakota.. Otto E. EUerman. State Mine Inspector. Lead. 

Tennessee R. A. ShiDett. Chief Mine Inspector. Nashville. 

Texas I.J. Broman. State Mine Inspector, .\ustin. 

Utah J. E. Pettit. State Mine Inspector. Salt Lake City. 

Virginia Capt. Richard B. Roane. Mine Inspector, Richmond. 

Washington.. James Bagley, State Inspector of Coal Mines. Seattle. 
West Virginia.. Earl Henr>-, Chief. Department of Mines, Charleston. 

STATE GEOLOGISTS 

Alabama Eugene A. Smith, University. 

Arkansas N. F. Drake, Fayetteville. 

Connecticut... William N. Rice, Supt., State Geol. and Nat. History Stirvey, 
Hartford. 

Colorado R. D. George. Director, Boulder. 

Florida E. H. .Sellards, Tallahassee. 

Georgia S. W. McCallie, Atlanta. 

niinois . . F. W. DeWolf. Director, Urbana. 

Indiana Edward Barrett, Indianapolis. 

Iowa George F. Kay. Des Moines. 

Kansas W. H. Twenhofel. Lawrence. 

Kentucky. J. B lloi'ing. Frankfort. 

Maryland William Bullock Clark, Baltimore. 

Michigan R. C. .-Mien. I.ansing. 

Miniiesota — W. H. Emmons, Minneapolis. 

Mississippi... - E. N. Ix) we, Jackson. 

Mi«soun H. A. Huehler, Rolla. 

Nebraska K. H. Barbour, Lincoln. 

New Jersey. . H. B. KOmmel, Trenton. 

New York I..hn M Clarke, Albany. 

N. Carolina. . .. Joseph Hyde I'ratt. Chapel Hill. 

N. Dakota A. G. I-eonard, Fargo. 

Ohio J. A. Bownocker, Columbus. 

Oklahoma C. W. .Shannon. Norman. 

Pennsylvania. R. R. Hice, Reaver. 

Rhode Island.. Charles W. Bro»-n, Providence. 

S. Dakota... . Freeman Ward. Vermillion. 

Tennessee A. H. I'urdui'. Nashville. 

Texaa J. A. Uddi-n, Director. Bureau of Economic Geolog>', Au^'i',. 

Vermont G. H. Perkins, Burlington. 

Virginia.. . Thomas L. Walson, Charlottesville. 

Washington.. . Henry l.ande8, Seattle. 

West Virginia.. L C. Whit*', Morgantown. 

Wisconsin.. W. O. Hotchkiiw, Madison. 

Wyoming.. . . L. W. Trumbull, Cheyenne 

These lists were compiled in December, 1915, from the 
latest information available at that time. 

It will be seen that of the 48 states of the Union, 34 
have organized geological surveys. 



Till': i:x(.i\i;i:riX(; v> mixixc .kmi.'Xal 



iorj 



Geimerall Review ©f Miimiinig' imi ^Ihie 

^ aim 1915 



By p. v.. Bahdouii 



All estimates of mineral production in the L'nited 
States for Uil.j indieate that it has iieen the most pros- 
perous year in the history of miniuff. Tlie irross output 
will prol)ahly be found in' excess of $2,000,000,000. The 
year has been marked by record productions in both cop- 
per and zinc and. owinjr to the war. in the semi-rare met- 
als also, such especially as tun.^sten. Iron mining did 
not reach the total of the f!)13 activities, but fell short 
of the production of that year only. 

The industry has l)een subjected to jirolilic and not al- 
toirether wise lejjislation and to a considerable amount 
of labor unrest, based largely on the miners" conception 
of an unfair distribution of profits; has witnessed a note- 
worthy boom in Arizona gold mining; has seen developed 
from obscurity the country's third largest zinc producer; 
a wild country-wide scrabl)le for tungsten ores; one ter- 
rible accident ; the blowing-in of two new large copper 
smelteries, and has seen the entire mining world go 
'•flotation mad." 

Arizoxa 

Except in the southern part of the state, labor con- 
ditions were eminently satisfactory throughout Arizona 
during lOlo. There was an ample supply of labor, and 
wages have been almost universally increased by the gen- 
eral adoption of a sliding scale, depending iipon the 
market price of copper. In the southern counties, where 
Mexican miners are used to a large extent, there has been 
an over-supply of men. owing to the entire breakdown of 
the mining industry in ^Fexico on account of the con- 
tinued rcMilutions. 

In the Clifton-Morenci-iletcalfe district a strike was 
called on Sept. 11. based on a demand for increased 
wages and recognition of the union, which has completely 
tied up that section to date. Although the struggle has 
been comparatively free from violence, thanks in a large 
measure probably to the prohibition law of the state, the 
contest has been desperate and acrimoniou!5 and no solu- 
tion of the difhculty is in sight. Militia has been .sent to 
the district, and its use and the Governor's action gen- 
erally have been criticized, and a petition has been circu- 
lated for the recall of the (lovernor. On account of 
threats, both by the strike leaders and the Governor, 
the mine managers left camp and established heailquar- 
ters in El Paso, where they still remain. 

High prices for both base and semi-rare nictals have 
greatly stimulated production. This condition has tended 
to stimulate mining and to make for the ojjening uj) of a 
large number of new properties and the reojiening of 
many old pronerties that have been closed down over a 
jieriod df years. Tlie smelting companies conducting a 
custom liusiness have been keenly affected by this situa- 
tion and have been obliged to increase their smelting 
facilities in order to handle the products of outside mines 
and concentrators, which are offered freely. All of the 
smelting companies are crowded to capacity. 

The Helvetia ]>mperty near Tucson ojiened a small high- 
grade molybdenite deposit and shipped in excess of $:'>0.- 



000. In the Dragoons the Primes Chemical Co. lias 
reopened its tungsten mines, and in northwestern Arizona 
there has been considerable activity in the search for 
tungsten and niolybdenuni.. 

There has been little change in the transportation fa- 
cilities in the state during the year, except in .so far as 
the good-roads movement has had re.sults. Several coun- 
ties have voted large bond issues for good roads, and 
motor-truck haulage is becoming more and more com- 
mon. The Calumet & Arizona Mining Co. started con- 
struction of a railroad to connect its copper mines at 
-Vjo with the nuiin line of the Southern Pacific at Gila 
Bend, and it is reported that the Santa Fe is contemplat- 
ing building a .spur into the Oatinan camp. 

A most drastic prohiiiition law went into effect in 
Arizona on Jan. 1, l!)lo, under which no alcoholic liq- 
uors may be shi]i]X'd into the state even for home or per- 
sonal use, nor can \m\\' alcohol be obtained within the 
state for any purpose what.soever. A general beneficial 
effect of this law is recognized even by those who are 
opposed to such drastic measures. This has undoubtedly 
been a factor in preserving order in the Clifton strike 
situation, and is also responsible for the cleanliness and 
orderliness of the boom camp at Oatman. where also, on 
account of the lack of booze, the red-light district has not 
thrived as is generally the case in a boom mining town. 
With this single i-edeeming feature, the Arizona Legisla- 
ture, inspired apparently by labor men, passed some per- 
nicious legislation which has hani]UMed and restricted the 
mining industry in many ways. The 80^ law. restrict- 
ing the number of alien citizens employed in a mine to 
one in every fi\e of the total number employed, was 
declared unconstitutional by the Supreme Court. The 
anti-blacklist law acted as more or less of a boomeran-: 
to the trade unionists, as the larger companies simply 
moved their hiring organization into California or 
Texas, and with the cxcei)ti(ui of this inconvenience, the 
situation was not changed. It is expected that this 
law also will be killed by the higher court. The miners' 
lieu law — a misnomer, as the law really provides for 
liens for everybody— which the legislature attempted to 
improve, is now in an indeterminate condition until the 
><tate Supreme Court has passed on it. 

The sale of the Bush & liaxter property near Twin 
Buttes. a!)out ."iO mi. northwest of Xogales, was .of con- 
siderable importance. The deal involved $100,000. Cop- 
per-sulphide ores are now being shipped on a considerable 
scale under the management of the Guggenheim interests. 

The mines of the Tond)stone Consolidated, at Toml)- 
stone, were acquired by Phelps-Dodge and are now being 
operated under the title of the Bunker Hill ^Mining Co. 
In the Tom TJeed-Gold I?oad district there have been 
many sales and transfers of property, some of consider- 
able magnitude, and to interests of national importance. 
The majority, however, were on terms and depend to 
a considerable extent on future developments, which are 
being rushed in all cases. . Owing to the war. labor dif- 
ficulties, adverse leirislation. etc.. Arizona has not at- 



106 



THE EXGINEERIXG <&= :\IINIXCt JOURNAL 



Vol. 101, No. 2 



traeted the outside capital for uew mining enterprises 
(excepting of course the Oatman boom) which it other- 
wise would have done under the stimulus of high metal 
prices and new finds of ore. 

Of course the most striking dcTelopment in Arizona 
during the year was the Oatman boom.^ in which the 
United Eastern was the star performer. On the 465 level 
a large body of ore was encountered which has devel- 
oped into one of the most promising gold mines in the 
countr}-. This inspired a boom, and nearly 100 com- 
panies, with a capitalization of nearly $100,000,000. have 
been formed to operate in this section of Mohave County. 

Zinc ore is also being mined in this section, as are sev- 
eral of the semi-rare metals, stimulated of course by the 
unusually high prices. 

The development of the United Yerde Extension mine 
at Jerome has produced remarkable results. The ore 
was struck in April, and shipping to the Clarkdale 
smelterj- began in May. Sliipments to Dec. 1 had 
amomited to $650,000; most of the ore shipped having 
come from development work and having averaged about 
45% copper. 

Inspiration started up its first 7,000-ton section of 
its new flotation ])lant, and work on a second section is 
nearly completed. Flotation plants have been installed, 
and operations started at widely scattered points in 
Arizona. The ITayden Development Co. erected and 
put in operation a 125-ton cyanide plant to treat the ores 
of the Copper Chief Alining Co., whose mines arc situ- 
ated 5 mi. south of Jerome. The Big Pine Consolidated, 
near Prescott, expected to install a 100-ton cyanide plant, 
but for various reasons had to postpone the beginning of 
construction until next spring. 

The Miami made changes in its mill, increasing the 
capacity from 3.000 to 4.200 tons daily, and the Ray 
Consolidated during the first three-quarters of the year 
produced nearly 44,000,000 ib. of copper, or at the rate 
of about 5,000,000 lb. per month. 

Two new smelteries were started during the year — the 
International at Mianu, and the United Verde at Clark- 
dale. The Consolidated Arizona, at Humboldt, increased 
its capacity by adding another reverberatory furnace, and 
changes increasing capacity were made at the Douglas 
]ilants. 

COLOKADO 

There has been no change in the labor or transporta- 
tion situations in the state during the year, the latter 
remaining generally unsatisfactory to the shippers. Con- 
siderable work bis been done in various parts of the state, 
improving wagon roads, which encourages the use of 
motor trucks for local ore haulages. 

There have been no changes in the lead-snicltiiig ore 
markets, and shipments to the smelteries have not de- 
clined as compared with previous annual tonnages, which 
is remarkable wIkmi the low price of silver during the 
year is taken into consideration. There has been a brisk 
ilemand for I^eadville carlKinates on ores containing as 
low as 20% zinc, and all known deposits are being worked 
to the fullest extent. A great variety of schedules exist 
covering the purchase of tliese ores, which, with the varj'- 
ing grades of ores, results in a great many market vag- 
aries. In addition to carlwnates carrj'ing over 20% zinc, 

■Deacrlbed at length In "Eng. and MIn. Journ.," Jan. 1, 



there are in the Leadville district large quantities of 
lower-grade ore which find a limited market at the local 
plant of the Western Zinc Oxide Co., which has been 
operating throughout the j'ear. 

Manganese ores being again in demand, a market has 
been created for the manganiferous iron oxides which, 
being too low in silver to ship to lead-smelting works, 
are now profitably disposed of to the steel works. 

The Wanakah smeltery, at Ouray, has operated inter- 
mittently during the year, chiefly on Wanakah ores, and 
has furnished a more or less attractive market for local 
producers, without diverting any considerable tonnage 
from other channels. 

The Workiiigmen's Compensation Act is generally sat- 
isfactory to the operators, although it largely raised the 
rate of liability' insurance. The mines were appreciably 
benefited by the restoration of the old law, taxing mines 
on one-quarter only of the gross output, until the net 
exceeds one-quarter of the gross, after which that becomes 
the basis for taxation. 

A great many sales of mining properties have taken 
place during the year. Some of the more interesting 
are the sale of the Humboldt mine to the Smuggler- 
Union Co. ; purchase from the Revenue Tunnel company 
of the northerly extension of the Montana vein by the 
Tomboy company; the largely increased holdings of the 
Primos Chemical Co., and the acquisitions by the Free- 
land Development and Tunnel Co. The most important 
sales of the year, however, were probably the purchase of 
the Golden Cycle by the Vindicator, in the Cripple Creek 
district, for $1,250,000 and the purchase of Strattons In- 
dependence by the Portland for £65,000 (approximately 
$300,000). 

The most sensational discovery in gold mines in the 
state during the year was the opening of the now famous 
vug in the Cresson mine, in Cripple Creek; one shipment 
from which having netted $468,637.29. 

Owing to the high price of tungsten, there was a 
scraml)le among prospectors for tungsten pro])erty, and 
several discoveries have been reported over a widely scat- 
tered area. The activity of course eventually centers 
around the Primos Chemical, the Boulder Tungsten Pro- 
duction and tile Xcderland Tungsten Production Co.'s ac- 
tivities. The treatment of tungsten ores at the Yukon 
mill is the seiond attempt at concentration of this ma- 
terial in the San Juan district; Wetherill magnetic sep- 
arator and Plumb jigs are being u.sed in tliese experi- 
ments. 

The state is going mad over flotation, the process is 
heralded as a cure-all for many ores that have not been 
profitable under other treatment and numerous premature 
flotation installations are being made. 

In the Leadville district the larger operating conipanic-; 
have maintained their regular output except the Wi-: 
em Mining Co., which, oiierating through the Wolft^ 
shaft, was probably the largest producer of zinc-carbon;) i 
ore in the country, has, owing to the depletion of ore r 
serves, reduced shipments to about (i,000 tons per moiHii. 

The most imjiortant enterprise undertaken in the Lc:iil- 
ville district during 1915 is the unwatering and rehabili- 
tation of the so-called "Down Town'' area, which em- 
braces that portiim of the district covered by the city 
itself. For many years previous to 1907 mines located 
in this area were profitably operated on the ores in the 
deep-lyi'ig fonnntions under the city: this mining wa.* 



Jumiarv 8, 191G 



Tin-: kx(;ixki;rix(; :- mixim; .J(;ci!N'ai 



lor 



ilisioulinuod (Uiriiiff tlio ]ianic of that year ami the umk- 
ings were allowL'd to lloocl with water. Duriiif;: the last 
two years leases covering the whole area have been ob- 
tained, and the Down Town Mining Co. was organized 
td unwater and continue the working of the ground. 
Progress to date has been sati.sfactory, and the water has 
been lowered to within 180 ft. of the bottom of the shaft. 

The American Smelting and Eefining Co. s])ent $2.50,- 
000 in ini])rovements at the Arkansas Valley smeltery 
during lOl."). These improvements ((insist largely of the 
installation of roasting equipment to take care of the in- 
creasing tonnage of sul])hide ore resulting fnnn the deep- 
er development of the Leadville mines. 

The leasing system has been so extended in Cri]iple 
Creek district that, together with the larger develop- 
ments previously mentioned, the district has had one of 
its most profitable years. Of great importance to its fu- 
ture is the resumption of work in the Roosevelt Drainage 
Tunnel, which will be extended about 2 mi., making a 
total length of 5 mi., at an estimated cost of $200,000, 
which work is expected to require about two years. This 
will drain the Vindicator, Golden Cycle and other mines 
t'ituated bcvdud a neaily vertical syenite dike, which. Iie- 
ing im]K'r\ i(iu>-, pre\ents these mines lieiielitiiig from the 
draniage now alfiiri|e(l mines on the dtlier side of the dike. 
The tunnel is at present lldwing l:i,Ol)0 gal. of water per 
mill. 

C.M.I I-OliXIA 

There ba\(' heeu no im|iortant changes in either the 
labor sitiiatidii or the ore market in California during 
the year liH-"). Tlieie has been considerable legislation, 
nnich of which, including the semimonthly payday bill 
and the workingmen's compensation law, is ccmsidered 
of very doubtful value by the mining comiianies. 

The Dutch-Sweeney-Ap]) mines, in Tudluinne County, 
were acquired by the Bewick, Moreing (.V Co. interests 
who, with .\merican moiu'y, have undertaken an extensive 
uiining campaign. 

Hydraulic operations in Xevada and Placer Counties 
were .stinmlated hy efforts on the i>art of mine owners 
in various districts to secure congressional ap]3ro])riation 
amounting to ^I-jOjOOO, for building a retaining dam 
on Bear IJiver. 

There was apex litigation in Grass Valley hetween the 
Empire and the Golden Centre, the Xorth Star and the 
l'hii])ire !Mine and Investment Co., and the Kennedy Ex- 
tension and the Argonaut. 

The smoke farmer was busy again in California 
througlunit the year, and did more or less to harass the 
various smelting companies, though luit suHicient to all'ect 
their o]ierati(nis. Against the Penn Mining Co. :!r) suits 
Were filed at CamjX) Seen during the early part of the 
year. The total amounted to •$;J;i4,;iU. The Mamnidth 
Co]iper Co. was again jnirged of contenqit by the I'liited 
States District Cinirt denying the petition of the Shasta 
County farmers filed the year ]ire\ ions. Later in the 
year the >meltci'-rume (|Uestidii in the Kedding-Kennett 
district was ic\i\ed bv the fanners, and an investigation 
wa< started by the State Veterinarian, who was also a 
iiicmlier of the State Snudtery Waste Commission. The 
liernicious activities of the smoke farmers have ]irevented 
the starting up of the Balakalala smeltery, but in order 
to avail itself to so,.ie degree cd' the henellts of high 
cd]i]ier ]iriccs a contract has been eiilered intd with the 
-Mammdth. whereby the- latter conipauy will smelt the 



IJalakalala ores, and regidar shipments are being iiiade. 
Tjassen Peak indulged in another serie- of eruptions 
during the sunniier months, and while these were spec- 
tacular, they did no special damage. 

-Motor trucks for ore haulage are becoming increasingh 
common. By their u.se the Ubehebe District, in the north- 
eastern part of Inyo County, hofies to liiid an outlet for its 
ores, which will aid in developing and exploiting this 
isolated district, now showing considerable activity. 

Prospecting for, and mining of, tungsten ores received 
the greatest impetus. Every available piece of ground 
within miles of Atolia has been located, and many leasers 
are taking out tungsten ore and making better than wages. 
The Atolia Mining Co., around which all of the tungsten 
activity centers, because of its milling facilities, has in- 
stalled a new ]dant for concentrating scheehte. 

Operations in .Modou County during 1915 have been 
on moderate scale, but in Eldorado County there has been 
a pi'onounced mining revival. 

In Inyo County the AVilshire Bishop Creek mine has 
proved up a larger extent of ore than was anticipated. 
and the Cerro Gordo has, be.-ides extremely encouraging 
underground work, built an a('rial tramway 29,118 ft. 
long, to transjKU't ore from the mine to Keeler, theship- 
iiiiii;' pdint. 

Placer mining for gold, for years considered a decadent 
industry in California, has for the past 18 yr. been grow- 
ing in im])ortance, until now the jdacer mines are pro- 
ducing 44% of the total gold yield, the other oli'/J 
coming from deep mines, according to the United States 
(ieoUigical Survey. This condition has been entirely 
brought about by the dredging operations, the g(dd 
dredges now producing 8()% of the placer gold. During 
191-5 there were (iT g<dd dredges in California, of which 
Ci wore . losed down all or ])art of the time and one was 
bii i.ed, leaving (!0 active. A lii-cu.ft. !)ucket dredge is 
under construction for the Yuba Con.solidated, in Yuba 
County, and aiidtber one of equal capacity (to dig 10 ft. 
below water line) is being built for the ^larysville 
Dredge Co. in the .same county. Plans have been pre- 
pared for still aimther of the same size for the Yukon 
G(dd Co. in tiie same Held. The present tendency is 
toward e.xteiisive yai'dage in dredging operati(Uis, .>;o the 
new nuicbiiu's are nnich larger and more iiowerful than 
those built formeily. 

Ill.MlO 

The most sjiectacular occurrence of tlie year in Idaho 
was the develo])nieiit of the Consolitlated Inter.state- 
Callahan mine, which was practically unheard of at the 
beginning of the war. into the third largest zinc pro- 
ducer in the country, being exceeded only by New Jersey 
Zinc and Butte & Superior. Under the stimulus of a 
runaway zinc market this iu-o])erty paid dividends in 
191.5 of $2,.5:30,000, with a single disbursement in August 
of .$9(;0,000. In the second half of the year a legal light 
for control (d' the Cmisolidated Interstate-Callahan devel- 
oped, and ai)plicati(Ui was made for a receiver. An in- 
juiu-tion restraining the a)ipointnu>nt of a receiver was 
asked for. and the legal tangle still continues. The con- 
trol of the IJay-Jelferson was secured l.y the Day interests, 
and tliis .-ieems to have a considerable hearing on the 
future of the Fnterstate-Callahan. on account of the fact 
that the two properties adjoin and the Interstate-Callahan 
tried to senire control of the Rav-.Tell'erson stock. 



108 



THE EXGIXEERIXG 6- MIXIXG JOURXAL 



Vol. 101, No. 2 



A controversy between the Henule? Alining Co. and 
the American Smelting and Eefiniug Co. regarding the 
terms of renewal of the smelting contract for the Her- 
cules ore resulted in a deadlock, and the Days, who con- 
trolled the Hercules, closed the mine and later secured 
control of the Northport smelten- situated in the State 
of Washington, near the Canadian line. The rehabilita- 
tion and reequipment of this plant for the treatment of 
Hercules ore and custom ores are nearly completed. This 
brought to the forefront the renewal of the contract be- 
tween the smelting company and the Bunker Hill & Sul- 
livan Mining and Concentrating Co., with the result that 
the Bunker Hill & Sullivan announced its intention of 
building a $1,000,000 lead-smelting plant in the Coeur 
d'Alenes, if satisfactory freight rates and smoke ease- 
ments could be secured; otherwise on the Pacific Coast. 
Work of drawing the plans and working out the design 
of this plant are well under way, although where it will 
be situated has not been announced. 

If the Xorthport and the Bunker Hill & Sullivan 
smelteries fulfill expectations, there will be an important 
and favorable extension of the ore market for the pro- 
ducers throughout the Coeur d"Alene district. 

The most important geological result of the year in 
the Co'ur d'Alene was the development of good ore, both 
zinc and lead, in the Pricbard formation, which is the 
deepest fonnation of the district and was considered at 
one time of doubtful value as an ore bearer. The state 
mine in.<peitor is quoted as saying that this development 
will result in expanding the productive area of the Cieur 
d'Alenes not less than 100%. 

Almost every mill in the Coeur d'Alene district is 
equipped with flotation units. At the Trail smeltery in 
British Columbia, the new electrolytic zinc plant is prac- 
tically completed and ready for operation, which is ex- 
jXK-ted to have a considerable effect on the market for 
zinc ores produced in this district. 

Owinir to the stimulus of high metal prices, practically 
ever}- mine in Idaho that has been idle has resumed oper- 
ations, and although tlie Ca?ur d'Alene has attracted the 
lion's share of attention, all of the other districts have 
been stimulated. In the region innnediatcly surround- 
ing Boi.<e 1,000 men are employed where last year there 
were not to e.xceed 100. A new railroad built into this 
district for the purpo.se of opening up large timber trat-ts 
affords an outlet for the ores to Salt Lake, so that medi- 
um-grade concentrates may now be handled. 

MlCHIG.\X 

The history of Lake Sujxjrior copper mining- during 
the year can lie briefly but accurately summed up in the 
simple statement of the unprecedented efforts of all op- 
erating companies toward nia.xinuim production. When 
navigation opened in the spring, there was no accumu- 
lation of copper, all-rail shipments were continuing heavy, 
and trains of 1,000,000 lb. of copper were not uncommon. 
When lake navigation closed at the end of the year, the 
heavy all-rail shipments were resumed. 

The attempt of the Western Federation of Miners to 
cajole Finnish miners to join their union failed, and 
the Socialist agitators, after subtle hints of de])ortation, 
left the di.strict. thus closing the incident which at one 
time had a nastv look. 



=A detailed rrvlrw will appi'nr In the ••Jiiuinal," Jan. 15. 



Whereas most of the mines on the Marquette, Menomi- 
nee and Gogebic iron ranges of Michigan were forced to 
curtail operations in the summer and fall of 1914, business 
started to pick up during the early part of litlo. There 
was plenty of labor, and no difficulty was experienced in 
getting men. Many of the companies had cut wages 10%. 
Xow. however, there are twice as many men employed in 
and about the mines as at this time a year ago, and the 
old wage scale lias been restored ; there are practically no 
idle men on the ranges : and a labor shortage is expected 
before spring. 

The demand for iron ore was brisk after the shipping 
season had been opened for about a month. The boats 
had difficulty getting all the ore down the lake, manv 
freighters being attracted by the high rates being paid for 
carrying grain. Prices for iron ore were the same as in 
the year previous, but an advance of Toe. per ton has 
already been announced for 191(). Many stockpiles that 
had been at the mines for several years were loaded and 
shipped, and operators had the best season they have had 
for several years. The pro.spects for 1916 are bright. 

All of the charcoal-iron furnaces in the Lake Superior 
district are running at a satisfactory rate. The Cleveland- 
Cliffs Iron Co. 's adding 20 retorts at Pioneer Furnace. 
Marquette, which will give better results in the byproduct 
department. The sulphuric-acid plant is to be enlarged. 
There is also a plant at Xewbury, one at Gladstone, one 
at Manistique and one at Stephenson, all of which are in 
blast : the furnace at Ashland, Wis., is also running. The 
Jones furnace, at Marquette, which was touted to revolu- 
tionize the iron business, has been idle for months. 

ilacliines for loading ore into cars underground are be- 
ing given serious attention in this district. A large loader 
worked in the .Tudson, at Alpha, for some months, giving 
good results, and one of these machines is now working 
satisfactorily underground in the Mass, at Xegaunec 

Electricity is fast replacing steam in many of the mines. 
The Peninsula Power Co. is extending its lines in the 
Crystal Falls district in order to accommodate the mines 
there, and is adding to its main plant on the Menominee 
River and its sulistation at Iron River. The Cleveland- 
Cliffs Iron Co. is getting ready to erect a new hydro- 
electric plant on the Dead River, north of Xegaunee. 
The plant on the Carp River will not be large enough to 
take care of all the mines when the new ones are ready 
to use current. 

MiNXESOT.V 

There has Iteen a continual increase in the demand 
for labor on the Minnesota ranges during the year, ac- 
companied by an advance in wages, until now practically 
the same conditions exist regai'ding wages as prevailcil 
in the record-breaking year of 1913. It will be a buj;> 
winter, with good wages all over the iron ranges an^ 
]>lenty of work. 

There has lieen a largely increased demand for tin 
Cuyuna Range manganiferous ores. Owing to the em- 
bargo on siiipping, as a result of the war, and the conse- 
quent high ocean freight rates, consumers have been 
forced to give more attention to domestic soiirces of man- 
ganese ores. During the winter manganiferous ores will 
continue being shipped all-rail from the Cuyuna Range 
and a considerable amount will be stockpiled. 

Xo direct state legislation of any moment has been 
directed toward the mining indu.stf}'. but the new .sea- 
men's law. ]m!'sed by tlic last Congress. -Ims hampered ore 



.lanuary 8, 11)16 



rnE EXGINI':EKlN(i 



MIXING JOURNAL 



109 



transj)ortation to a considerahic extent and lias made 
transportation costs higher. 

The tax disputes between the mining companies and 
the village otiicials of Hibbing were finally adjusted on 
Xov. 23. Several of the largest taxpaying com])anics 
had refused to pay their taxes on account of the extrava- 
gant and wasteful disbursements of the Town of Hibbing. 
.\fter suits, threats, injunctions and recriminations, the 
mining companiss paid their back taxes, the village agreed 
to limit its expenditures to reasonable amounts per month, 
and the $1,900,000 tax levy for 1916 was abandoned. 

On Nov. 1, by order of the Indian Commissioner, all sa- 
loons in Chisholm, Hibbing and other Mesabi Range 
towns were closed ; all in the Cuyuna Range had been dry 
for a consideral)le period. Mine operators in general favor 
this apiilicati(m of prohibition to these mining com- 
munities. 

Mining activity on the Minnesota ranges has exceeded 
anything in the ]iast history of the ranges except the ban- 
ner year 1913 ; almost without exception, properties have 
iione on a maximum-production basis, and the Cuyuna 
Range for the first time in its history shipped over 1,000,- 
000 tons. No material changes were made in railroad 
facilities. The ratio of tonnage going to the two car- 
riers remained the same as last season — 85% to the Soo 
line and 15% to the N. P. 

Announcement has already l)een made of an advance 
of Toe. per ton in ore prices for 1916, and some of the 
big independent producers are holding out for a higher 
figure and fully expect to get $1. The prospect is bright 
for a banner production, although a shortage of lake-trans- 
]iortation facilities is faced. 

The Minnesota Steel Co. resumed construction on its 
steel plant at Duluth and began the manufacture of steel 
billets. The Duluth & Iron Range R.R. let contracts for 
a new $1,500,000 steel and concrete dock, at Two Harbors, 
to replace its old No. 3 wooden dock, which will be dis- 
mantled. In anticipation of the greatly increased tonnage 
next season, the lailroads that haul iron ore to the dock 
at the head of Lake Superior have placed large orders 
for heavy locomotives and sleel hopper ore cars to handle 
tlie traffic. 

illSSOURI 

Owing to the extremely high prices paid for Joplin 
zinc concentrate and for "jack'" a great deal of unrest 
occurred among the miners of the district. This feeling, 
fostered by the Western Federation of Miners, who be- 
lieved the time ripe for an invasion on the Joplin district, 
resulted in a strike, called June 28. Several of the large 
producers shut down for a period of two weeks and as- 
serted that they would remain closed indefinitely rather 
than deal with the Western Federation. At its height 
."■.000 lead and ^inc miners were involved in the strike, 
which, however, fell to pieces and the mines resumed 
with full working forces on July 12, the defeat of the 
unionizing movement having been complete. At present 
the canip is still, as it always has l)een, an open-shop camp, 
and the wages are in excess of $4 ])er S-hr. .shift. 

The railroads have been fighting hard for an increase 
over the 21/2C. passenger rate now in effect, Imt thus 
far without avail. The Interstate Commerce Commission 
has, however, granted an increase in freight rates on zinc 

"Dealt with at length in the special article on tiio Mis- 
souri zinc industry elsewhere in this issue. 



and lead ores, pig lead, etc. ; the advance on coal amount- 
ing to 50c. per ton from the Kansas field to .TopHn. There 
have been but slight increases or additions in transpor- 
tation facilities, the railroads being loath to spend any 
money without an increase in rates. 

The state, in conjunction with the United States Gov- 
ernment, has done much good work to improve sanitary 
conditions for the minei's, based largely on the research 
Work conducted by Dr. A. J. Lanza, and Edwin Higgins,'' 
of the Bureau of Mines. 

A number of laws were passed relating to the dust-allay- 
ing methods to be used in lead and zinc mines and com- 
pelling the construction of change and wash houses. 

There has been no other important legislation direct- 
ly affecting the mining industry, although several near-by 
states have introduced the workingmen's compensation law 
and prohibition. 

In southeastern ]\Iissouri the Mine La Motte Co. has 
installed steam shovels and is operating a washery for 
concentration of the lead found in surface clays. 

Among the interesting developments in the Joplin di.s- 
trict during the year were the experimentation done with 
flotation, leaching, electrolytic precipitation, and the at- 
tempt to convert second-grade concentrates into a high- 
grade roasted product, from which high-grade spelter, 
rivaling the New Jersey Zinc Co.'s Horsehead and Bertha 
brands, could be made.^ 

MONTAXA 

The year 1915 witnessed the most remarkable progress 
by the Anaconda Copper Mining Co. in its Butte mines 
and in its reduction works at Anaconda and Great Falls. 
At an expense estimated at $6,000,000, the Washoe smel- 
tery capacity was greatly increased ; a new roaster plant 
was installed; a new reverberatory plant was built; the 
oil-flotation process was installed in the remodeled con- 
centrator; a sulphuric-acid manufacturing plant was 
erected ; and a score of lesser improvements were made. 
At the Great Falls plant, at an estimated cost of $1,350,- 
000, an electrolytic copper refinery was built with a capac- 
ity of 15,000,000 lb. per month, and radical changes were 
made in the reduction works there. 

At the beginning of the year the payroll was on a basis 
of $3.50 per day on a 5-day a week schedule ; at present 
the scale is $-4 per day with a 6-day schedule. The monthly 
payrolls January, 1915, were $400,000; at present they 
are $1,150,000. " 

An increase of 20% in the ore that can be handled at 
the Washoe and Great Falls smelteries is expected after 
Feb. 1, 1916, and this will necessitate working all the 
Butte mines at capacity. The present average daily 
production of 13,600 tons will be increa.sed to 16,000 tons. 
Fully 40 mi. of crosscuts, raises, drifts, winzes and shafts 
make up the develo])ment work of the year. 

At the present time the Nettie, Alice. Emma and IjOX- 
ington, four well-known old mines, whose ores are high 
in zinc and silver, are being unwatei-ed and put in con- 
dition to o]ierate: work being rushed to secure, in par- 
ticular, the zinc ores. 

The concentrator at tlie Waslioe smeltery was remod- 
eled and oil flotation was installed, which has reduced the 



'Technical Paper lHa, Bureau of Mines, "Pulmonary Dis- 
ease .A.mons Miners in the Joplin District, Missouri." "Enpr. 
and Mining Journ.," Dec. 11, 1915, p. !176. 

•'A considerable amount of mill construction in the zinc- 
lead district is given in detail under construction news else- 
where In this Issue. 



110 



TlIK KX(;IXEEEIXG or MIXING JOURXAL 



Vol. 101. X. 



(ojipor !elt iu the tailiii.us to 0.1% against 0.0-")% under 
the old plan. 

The zinc experimental plant at Anaconda (no longer 
experimental) is a success and is making o tons of zinc 
jjer day. A larger plant will be constructed in 1916. 

Anifius the properties developed ov iu course of devel- 
opment is the Trojiie, situated 2 mi. east of Butte and 
owned by the Anaconda company. AI;out 7-3 tons of ore 
per dav is being siiijiped from this mine. Arrangements 
liave been made for the Anaconda company to develop 
the ground belonging to the South Butte Mining Co. and 
lying south and west of the Belmont mine. A crosscut 
is being driven into this property from the 2,800 level of 
the Belmont. 

At the Knnua mine the work of unwatering the shaft 
is progressing rapidly. The crosscut from the 1,SOO level 
of the Original has now been run 2,000 ft. south in the 
direction of the Emma. The Lexington, which has a 
shaft 1.400 ft. deep, has the water down to the 6.50 level 
and about 2,000 ft. of the old drifts cleaned out and re- 
timlx'red. The ^loonlight is installing a new electrical 
hoi.st— capacity 24,000 lb. from a depth of 2.-500 ft. 

Anaconda's production increased from nearly 14,000,- 
000 lb. in January to over 22,000,000 lb. ])er month in 
the middle of the year. 

The most remarkalile development in mining in the 
Butte district during the year l'J15 has been the progress 
in the production of zinc ores. At present Butte has 
the second largest zinc producer in Xorth America, the 
Blackrock mine of the Butte & Superior. 

During the year the Butte & Superior produced ap- 
proxiqiately 165,000,000 lb. of zinc. The lowest month's 
production was in June, when it amounted to 11,81.5,583 
lb. The month of Xovember passed the 16.000,000-lb. 
mark. The increa.-^e in tonnage during the year was from 
36,840 tons in January to 52.360 tons in Xovember. 
The shaft of the Blackrock mine was sunk during the 
year from a depth of 1,640 to 1.920 ft. and stations were 
cut on the 1,700 and 1,900 levels. The ])resent ore 
reserves are estimated at over 1,000,000 tons, or two years' 
supply at the present rate of treatment. About 4 mi. 
of crosscuts and raises were completed. 

During 191.5 Butte & Superior comjtleted the installa- 
tion of the new oil-flotation ])lant, in which are (50 new 
Janney machines. With the improved nuicliinery. the 
recoveries were increased from 91% to 95%. The out- 
put of the mill, which was figured at 1,000 tons per day, 
is 50% in excess of that. The dillicidty encountered early 
in the year of finding smelting facilitu-s tu iiandle the out- 
put was finally overcome, and all the concentrates the 
mill can turn out are iU)W being handled. 

The riark mining interests in Butte have confined 
their efforts during the ])ast 12 months to the further 
devclopinciit of their zinc ]iroperties. M the Timlier Butte 
mill, which started ojierating in June, 1914, many im^ 
provements have lieen niaiie that W. .\. Clark, Jr., states 
have brough*' the recoveries u]i to 95.5% on the average, 
and they make a much better showing than that in some 
instances. 

The mill now has a cajiacity of approximately 5,000 
tons of concentrates a month, although it has been turn- 
ing out only about 4.000 tons, as the contract with the 
"meltnrs limited the amount from the Timber Butte mill 
♦o that figure. After Jan. 1 they cxpeit to increase their 
output to capacity. All the ore handled is taken from 



tile Elm Oriu, wiiere sinking and cross-cutting sullicient 
to keej) fully three years of ore reserves ahead have l)een 
carried on during the last year. The Elm Orlu has let a 
contract for the installation of a new electrical hoist sim- 
ilar to that at the Granite ilountaiu. 

The 2,000-ft. shaft that is being sunk on Clark prop- 
erty" in the X'orthwest section is being put down with 
the primary object of increasing the zinc output, and 
should large bodies of zinc ores be ojiened there as the 
engineers expect, the Timber Butte mill will be kept bu.sy 
making concentrates from the Clark mines alone. 

The out])ut of zinc in concentrates per month runs 
about 4.000.000 11). from the Timber Butte mill — about a 
quarter of the output of the Butte & Superior mill. 

Should the zinc plant of the Anaconda company prove 
its success to the satisfaction of the Clark interests, a 
])lant to make zinc v.ill be installed by them in Butte. 

In addition to the Butte & Superior, Anaconda and 
Clark interests, it is understood that the United States 
Steel Corporation has secured options on valuable zinc- 
mininu ]iropcrties in the Butte di-strict and mav enter 
this field. 

The East Butte Copper Co. has started up its new oil- 
flotation plant with satisfactory results. It ])ossesses two 
advantages due to recent advances made in Montana — it 
will secure its su]])huric acid from the ■large sulphuric- 
acid manufacturing plant of the Anaconda company, and 
it will secure cheap electric power from the immense 
hydro-electric developments of the Montana Power Co. 
The capacity of the new plant is 400 tons of ore per day. 
There are large quantities of tailings on the dump at the 
Pittsmont sniciterv, containing considerable co])per, 
which will be re-treated in the new oil-flittation plant, 
where also it is ])ossible to handle at a good profit large 
available bodies of low-grade ore. 

Improvements made at the .smeltery during the jiast 
year include the rebuilding and enlarging of the blast 
furnaces, which puts the East Butte in a very advan- 
tageous jiosition. It is now handling only the ores of lb:' 
Butte-.\lex. Scott mine and of its own mines, but will Ih> 
able to care for considerable custom ore from near-l)y 
mines. Its production during the coming year will jirob- 
ably run clo.se to 2.500.000 lb. of copper ])er month, or 
3o,((0(i,000 11). for the year. 

The contract work for the develoi)ment of the Xorth 
Butte ICxtension has been completed. This included 
drifting along the Overland claim and crosscutting the 
width of the claim on the 1,200 level from the Blackrock. 
The new ore reserves arc maintaining the old averai." 
of silver — about 20% zinc aiu^ 7 oz. of silver. 

The Butte & Great Falls is sinking to the 500 level and 
is crosscutting on the 300, where the lead has been cut. 
The Butte-Duhith went into the hands of a receiver earK 
in the year on account of financial difficulties, from whii 
it was not extricated until late in December, when 
wtu'king arrangement was nuide with the East Butte, i 
which operations can be resumed uiuler direction of tli' 
latter comijauy. which has financed the former's indehted- 
ness. The ultimate consideration is said to be .55% "' 
the stock. The Butte-Alex. Scott has installed a n. 
headframe, a new double-drum Nordberg hoist, roun 
cable and skips. 

The leaching ])lant at the Bui'iw'nacker mine was not 
operated, but in the latter half of the year considerable 
copper ore was shipi)ed from this property. The North 



Jamiar}- 8, 1916 



THE ENGINEERING & MINING JOUENAL 



111 



Butte produced nearly 8,000,000 lb. of copper during the 
first half of the year and considerably increased the rate 
of production toward the end of the year, as did other 
copper mines in the district. 

The dissolution of the Amalgamated Copper Co. did 
not aflFect the Butte mines control, although local pride 
was gratified by the fact that the Anaconda became the 
nominal, as well as the actual, leader. 

A workingmen's compensation law was put into effect 
in Montana during the year, the adoption of different 
clau.<es of which was optional with the mining comj)anies. 
There was no unanimity among the mining comiiauies in 
their choice of the optional clauses of the act, but it has 
seemed to give general satisfaction. 

The most serious accident in the history of Butte min- 
ing occurred on Oct. 19, when 13 boxes of dynamite about 
to be lowered into the mine exploded at the collar of the 
Granite Mountain shaft of the North Butte Co. Sixteen 
men were killed and several severely injured. The cause 
of the accident has never been determined, despite careful 
investigations. 

The annual report of the state mining inspector gives 
the present monthly mining payroll in Silver Bow County 
as approximately $l,7.iO,000 and the number of men 
employed as 14,067. 

Montana oil and natural-gas fields received a great 
deal of attention during the year ; many producing wells 
were brought in, and much promising prospecting is 
being done. 

Nevada 

Labor and wage conditions throughout Nevada remain 
practically without change. A threatened strike at Ely, 
owing to an edict for compulsory physical examination 
of employees by the Nevada Consolidated, was finally 
averted by the company withdrawing the order. 

Except for the larger companies which had long-time 
sliding-scale contracts, the zinc-ore market has been rather 
restricted, but for these companies their ores have been 
marketed at a very considerable profit during the high 
price of spelter. Following the increased activity in Gold- 
field and surrounding country, the Western Ore Purchas- 
ing Co. reopened its sampler at Goldfield. thus affording 
a quicker and more convenient market for the small 
shippers of gold ores. 

Motor trucks are displacing wagon transportation wher- 
ever roads will pennit, but in districts like Aurora and 
Fairview bad weather compels the laying up of the motor 
truck and the return to 12- and 16-horse and mule teams 
for freighting. The Aurora haul is 60 mi. Motor haulage 
has not always lessened transportation costs, however, 
owing to poor roads made worse by increased heavy traffic. 

An incipient boom followed the discovery of free gold 
in a bold outcrop at Willard. a few miles from Love- 
lock, and a small mushroom tent city sprang up. The 
boom died a-borning, however, and the camp is now all 
but deserted. The search for good prospects, both for the 
precious metals and rare metals, is becoming keener, but 
no important discoveries have been made except in the 
case of tungsten. The greatest activity in this has been 
in the Snake Range, in the eastern part of Whit^ Pine 
County. Four mills are operating, concentrating scheelito 
and hiibnerite, making concentrate averaging about 60% 
WO3. In the vicinity of the United States Tungsten 
Co.'s property, 12 mi. south of Osceola, both north and 
south of their mill a great manv locations have been 



made, the discovery work on these claims invariably show- 
ing tungsten ore. Probably 300 men ai(.' working on 
tungsten properties in the county. 

The Nevada Consolidated Copper Co. ran on a 50% 
basis during the first six months of the J'ear, but during 
the last six has produced 10,000 dry tons daily. Flota- 
tion experiments are being carried on at the concentrator, 
and at the smeltery and power plant a quarter of a million 
dollars has been spent on increased capacity and new 
equipment. The Ruth mine has been started up on a 
1,000-ton daily capacity, to be gradually increased to 3,000 
tons, mined by underground methods. Steam-shovel op- 
erations are running smoothly. The two pits. Eureka 
and Liberty, are gradually being connected. No work 
has been done on the Con.-^olidated Copper ilines (old 
Giroux) except some ore taken out by the Nevada Con- 
solidated from the Ora claim, as the Nevada Consolidated 
work necessitated. The old Victoria copper mine, 15 mi. 
northeast of Currie, on the Nevada Northern R.R., has 
been bonded, and some ore has been shipped to Salt 
Lake, motor trucks being used for hauling to the ship- 
ping points. 

The Good Springs district has witnessed considerable 
construction of small mills, mostly of the dry concentrat- 
ing type. Several sales of property, from $30,000 to $50.- 
000 each, have been made. Important orebodies of lead- 
zinc ore were discovered in Green Monster, Mobile, Bo- 
nanza and Sultan mines, and a new shoot was opened 
in the Yellow Pine. Vanadium ore of good grade was 
discovered on the Christmas property, and a considerable 
tonnage of vanadium ore is blocked out in the various 
mines in the district. No production of platinum from 
the Boss mine was made, as the mine has been under op- 
tion throughout the year on terms which did not permit 
shipments to be made. 

The zinc-carbonate calcining plant at the Potosi was 
greatly improved, and dry concentrating plants using 
Stebbins tables were constructed at the Bullion. Anchor 
and Sultan mines, and a plant using Sutton. Steele & 
Steele tables was erected at the Frederickson mine. All 
of these plants are of about 60 tons' daily capacity. 

The Rochester and Nevada Packard mills both went 
into operation, and for the periods operated made heavy 
production. Imjjortant alterations were made at the Au- 
rora mill, and bullion shipments were far in advance of 
those of 1914. The Pittsburgh Silver Peak at Blair prac- 
tically exhausted its orebodies and began the examina- 
tion of a property in California to which they will move 
the Silver Peak mill if the examination justifies. In Jar- 
bridge the Bluster mill operated to capacity, and in 
the Manhattan district five mills were operating, one of 
them treating 150 tons per day. 

On the Comstock lode healthy and continuous operations 
were carried on with satisfacttiry. but not startling, results, 
although the silver production decreased. 

The Mason Valley smeltery was idle during the year. 
The Nevada-Douglas proceeded with the construction of 
a leaching plant, and late in the year operations were 
started. 

Pioche for the first time in 40 years entered the divi- 
dend-paying list on the strength of distributions made by 
the Prince Consolidated, which was shipping at the rate 
of 12,000 tons per month in October. The Amalgamated 
Pioche also made important shipments, as did a number of 
the smaller properties. There was considerable activity 



112 



THE EX(;IXEERIXG cr .MlXlXii JOURXAL 



Vol. 101, Xo. 5 



r mill l)uikling, and prospects for the district lor I'JIG 
aie bright. 

Apex litigation threatened, at one time during the year, 
to involve all the important properties in Goldfield, hut 
linallv amicable adjustments and side-line agreements 
were made, and all suits were withdrawn. Tonopah also 
was afflicted with serious apex litigation. 

Xew Micxico 

The Lordsburg district during the year made a total 
production of approximately 10.').i)0t) tons, valued at $800,- 
(11)0. which is double the tonnage of any previous year 
in the history of the camp. Production in this district was 
stimulated by the advent of the Arizona & Xew Mexico 
Rv., which built a s])ur into the Virginia section of the 
district. This eliminated the 3-mi. wagon haul to Lords- 
hurg. formerly done by freight teams and later by trac- 
tors, and reduced haulage costs approximately r>0% and 
made shi]>|)iug advantageous all the year around, whereas 
winter weather had rendered hauling an impossibility 
before. 

During the year two important mining transactions were 
clVected. The .\twood mine was purchased by the So 
^lining Co.. and dianusnd drills which were immediately 
put to work resulted in the discovery of new orebodies 
which warranted a continuation of ojierations at the At- 
wood shaft. Eate in the year Silver City capitalists and 
mining men associated with the Chino Cop])er Co. came 
to the assistance of the Bonney Mining Co.. took care 
of its indebtedness, refinanced the comjiany and it is 
i'N])ecte(l will place it on the i)ro(huiiig list early in 
I'.iK!. 

T